Search This Blog

Wednesday, May 20, 2020

Night terror

From Wikipedia, the free encyclopedia

Night terror
Other namesSleep terror, pavor nocturnus
SpecialtyPsychiatry, Sleep medicine, Clinical Psychology

Night terror, also known as sleep terror, is a sleep disorder causing feelings of panic or dread typically occurring during the first hours of stage 3–4 non-rapid eye movement (NREM) sleep  and lasting for 1 to 10 minutes. They can last longer, especially in children. Sleep terrors are classified in the category of NREM-related parasomnias in the International Classification of Sleep Disorders. There are two other categories: REM-related parasomnias and other parasomnias. Parasomnias are qualified as undesirable physical events or experiences that occur during entry into sleep, within sleep, or during arousal from sleep.

Sleep terrors usually begin in childhood and usually decrease with age. Factors which may lead to sleep terrors are young age, sleep deprivation, medications, stress, fever, and intrinsic sleep disorders. Though the frequency and severity differ between individuals, the episodes can occur in intervals of days or weeks, but can also occur over consecutive nights or multiple times in one night. This has created a situation in which any type of nocturnal attack or nightmare may be confused with and reported as a night terror.

Night terrors tend to happen during periods of arousal from delta sleep, also known as slow-wave sleep. Delta sleep occurs most often during the first half of a sleep cycle, which indicates that people with more delta-sleep activity are more prone to night terrors. However, they can also occur during daytime naps. Night terrors can often be mistaken for confusional arousal.

While nightmares (bad dreams during REM sleep that cause feelings of horror or fear) are relatively common during childhood, night terrors occur less frequently. The prevalence of sleep terrors in general is unknown. The number of small children who experience sleep terror episodes (distinct from sleep terror disorder, which is recurrent and causes distress or impairment) are estimated at 36.9% at 18 months of age and at 19.7% at 30 months. In adults, the prevalence is lower, at only 2.2%. Night terrors have been known since ancient times, although it was impossible to differentiate them from nightmares until rapid eye movement was studied.

Signs and symptoms

The universal feature of night terrors is inconsolability, very similar to that of a panic attack. During night terror bouts, people are usually described as "bolting upright" with their eyes wide open and a look of fear and panic on their faces. They will often yell. Furthermore, they will usually sweat, exhibit rapid breathing, and have a rapid heart rate (autonomic signs). In some cases, individuals are likely to have even more elaborate motor activity, such as a thrashing of limbs—which may include punching, swinging, or fleeing motions. There is a sense that the individuals are trying to protect themselves and/or escape from a possible threat of bodily injury. Although people may seem to be awake during a night terror, they will appear confused, be inconsolable and/or unresponsive to attempts to communicate with them, and may not recognize others familiar to them. Occasionally, when a person with a night terror is awakened, they will lash out at the one awakening them, which can be dangerous to that individual. Most people who experience this do not remember the incident the next day, although brief dream images or hallucinations may occur and be recalled. Sleepwalking is also common during night-terror bouts, as sleepwalking and night terrors are different manifestations of the same parasomnia. Both children and adults may display behaviour indicative of attempting to escape; some may get out of bed and begin running around aimlessly while inconsolable, increasing the risk of accidental injury.

During lab tests, subjects are known to have very high voltages of electroencephalography (EEG) delta activity, an increase in muscle tone, and a doubled or faster heart rate. Brain activities during a typical episode show theta and alpha activity when monitored with an EEG. Episodes can include tachycardia. Night terrors are also associated with intense autonomic discharge of tachypnea, flushing, diaphoresis, and mydriasis—that is, unconscious or involuntary rapid breathing, reddening of the skin, profuse sweating, and dilation of the pupils. Abrupt but calmer arousal from NREM sleep, short of a full night-terror episode, is also common.

In children with night terrors, there is no increased occurrence of psychiatric diagnoses. However, in adults who suffer from night terrors there is a close association with psychopathology and mental disorders. There may be an increased occurrence of night terrors—particularly among those suffering or having suffered from post-traumatic stress disorder (PTSD) and generalized anxiety disorder (GAD). It is also likely that some personality disorders may occur in individuals with night terrors, such as dependent, schizoid, and borderline personality disorders. There have been some symptoms of depression and anxiety that have increased in individuals that have suffered from frequent night terrors. Low blood sugar is associated with both pediatric and adult night terrors. A study of adults with thalamic lesions of the brain and brainstem have been occasionally associated with night terrors. Night terrors are closely linked to sleepwalking and frontal lobe epilepsy.

Children

Night terrors typically occur in children between the ages of three and twelve years, with a peak onset in children aged three and a half years old. An estimated 1–6% of children experience night terrors. Children of both genders and all ethnic backgrounds are affected equally. In children younger than three and a half years old, peak frequency of night terrors is at least one episode per week. Among older children, peak frequency of night terrors is one or two episodes per month. The children will most likely have no recollection of the episode the next day. Pediatric evaluation may be sought to exclude the possibility that the night terrors are caused by seizure disorders or breathing problems. Most children will outgrow sleep terrors.

Adults

Night terrors in adults have been reported in all age ranges. Though the symptoms of night terrors in adolescents and adults are similar, the cause, prognosis and treatment are qualitatively different. These night terrors can occur each night if the sufferer does not eat a proper diet, get the appropriate amount or quality of sleep (e.g. sleep apnea), is enduring stressful events, or if he or she remains untreated. Adult night terrors are much less common, and often respond to treatments to rectify causes of poor quality or quantity of sleep. Night terrors are classified as a mental and behavioral disorder in the ICD. A study done about night terrors in adults showed that other psychiatric symptoms were prevalent in most patients experiencing night terrors hinting at the comorbidity of the two. There is some evidence of a link between night terrors and hypoglycemia.

When a night terror happens, it is typical for a person to wake up yelling and kicking and to be able to recognize what he or she is saying. The person may even run out of the house (more common among adults) which can then lead to violent actions. It has been found that some adults who have been on a long-term intrathecal clonidine therapy show side effects of night terrors, such as feelings of terror early in the sleep cycle. This is due to the possible alteration of cervical/brain clonidine concentration. In adults, night terrors can be symptomatic of neurological disease and can be further investigated through an MRI procedure.

Causes

There is some evidence that a predisposition to night terrors and other parasomnias may be congenital. Individuals frequently report that past family members have had either episodes of sleep terrors or sleepwalking. In some studies, a ten-fold increase in the prevalence of night terrors in first-degree biological relatives has been observed—however, the exact link to inheritance is not known. Familial aggregation has been found suggesting that there is an autosomal mode of inheritance. In addition, some laboratory findings suggest that sleep deprivation and having a fever can increase the likelihood of a night terror episode occurring. Other contributing factors include nocturnal asthma, gastroesophageal reflux, and central nervous system medications. Special consideration must be used when the subject suffers from narcolepsy, as there may be a link. There have been no findings that show a cultural difference between manifestations of night terrors, though it is thought that the significance and cause of night terrors differ within cultures

Also, older children and adults provide highly detailed and descriptive images associated with their sleep terrors compared to younger children, who either cannot recall or only vaguely remember. Sleep terrors in children are also more likely to occur in males than females; in adults, the ratio between sexes is equal. A longitudinal study examined twins, both identical and fraternal, and found that a significantly higher concordance rate of night terror was found in identical twins than in fraternal.

Though the symptoms of night terrors in adolescents and adults are similar, their causes, prognoses, and treatments are qualitatively different. There is some evidence that suggests that night terrors can occur if the sufferer does not eat a proper diet, does not get the appropriate amount or quality of sleep (e.g., because of sleep apnea), or is enduring stressful events. Adults who have experienced sexual abuse are more likely to receive a diagnosis of sleep disorders, including night terrors. Overall, though, adult night terrors are much less common and often respond best to treatments that rectify causes of poor quality or quantity of sleep.

Diagnosis

The DSM-V diagnostic criteria for sleep terror disorder requires:
  • Recurrent periods where the individual abruptly but not completely wakes from sleep, usually occurring during the first third major period of sleep.
  • The individual experiences intense fear with a panicky scream at the beginning and symptoms of autonomic arousal, such as increased heart rate, heavy breathing, and increased perspiration. The individual cannot be soothed or comforted during the episode.
  • The individual is unable or almost unable to remember images of the dream (only a single visual scene for example).
  • The episode is completely forgotten.
  • The occurrence of the sleep terror episode causes clinically significant distress or impairment in the individual's functioning.
  • The disturbance is not due to the effects of a substance, general medical condition or medication.
  • Coexisting mental or medical disorders do not explain the episodes of sleep terrors.

Differential diagnosis

We have to distinguish night terrors from nightmares. In fact, in nightmares there are almost never vocalization or agitation, and if there are any, they are less strong in comparison to night terrors. In addition, nightmares appear ordinarily during REM sleep in contrast to night terrors, which occur in NREM sleep. Finally, individuals with nightmares can wake up completely and easily and have clear and detailed memories of their dreams.

A distinction between night terrors and epileptic seizure is required. Indeed, an epileptic seizure could happen during the night but also during the day. To make the difference between both of them, an EEG can be done and if there are some anomalies on it, it would rather be an epileptic seizure.

Assessment

The assessment of sleep terrors is similar to the assessment of other parasomnias and must include:
  • When the episode occurs during the sleep period
  • Age of onset
  • How often these episodes occur (frequency) and how to they last for (duration)
  • Description of the episode, including behavior, emotions, and thoughts during and after the event
  • How responsive the patient is to external stimuli during the episode
  • How conscious or aware the patient is, when awakened from an episode
  • If the episode is remembered afterwards
  • The triggers or precipitating factors
  • Sleep–wake pattern and sleep environment
  • Daytime sleepiness
  • Other sleep disorders that might be present
  • Family history for NREM parasomnias and other sleep disorders
  • Medical, psychiatric, and neurological history
  • Medication and substance use history
Additionally, a home video might be helpful for a proper diagnosis. A polysomnography in the sleep laboratory is recommended for ruling out other disorders, however, sleep terrors occur less frequently in the sleep laboratory than at home and a polysomnography can therefore be unsuccessful at recording the sleep terror episode.

Treatment

In most children, night terrors eventually subside and do not need to be treated. It may be helpful to reassure the child and their family that they will outgrow this disorder.

The duration of one episode is mostly brief but it may last longer if parents try to wake up the child. Awakening the child may make their agitation stronger. For all these reasons, it is important to let the sleep terror episode fade away and to just be vigilant in order for them not to fall to the ground.

Considering an episode could be violent, it may be advisable to secure the environment in which the child sleeps. Windows should be closed and potentially dangerous items should be removed from the bedroom, and additionally, alarms can be installed and the child placed in a downstairs bedroom.

Hypnosis could be efficient. Sleepers could become less sensitive to their sleep terrors.

One technique is to wake up just before the sleep terrors begin. When they appear regularly, this method can prevent their appearance.

Psychotherapy or counseling can be helpful in many cases. There is some evidence to suggest that night terrors can result from lack of sleep or poor sleeping habits. In these cases, it can be helpful to improve the amount and quality of sleep which the child is getting. It is also important to have a good sleep hygiene, if a child has night terrors parents could try to change their sleep hygiene. Another option could be to adapt child's naps so that they are not too long or too short. Then, excessive stress or conflicts in a child's life could also have an impact on their sleep too, so to have some strategies to cope with stress combined with psychotherapy could decrease the frequency of the episodes. A polysomnography can be recommended if the child continues to have a lot of night terror episodes.
 
If all these methods are not enough, benzodiazepines (such as diazepam) or tricyclic antidepressants may be used; however, medication is only recommended in extreme cases.

Research

A small study of paroxetine found some benefit. Another small trial found benefit with L -5-hydroxytryptophan (L -5-HTP).

Comparative studies of the Roman and Han empires

From Wikipedia, the free encyclopedia
 
The Roman Empire and the Han Empire around AD 1
 
Political map of the Eastern Hemisphere in AD 200

Comparisons between the Roman and Han empires involve the comparative study of the roughly contemporaneous Roman Empire and the Han dynasty of early imperial China. At their peaks, both states controlled a large portion of the world population and produced political and cultural legacies that endure to the modern era; comparative studies largely focus on their similar scale at their pinnacles and on parallels in their rise and decline. The vast majority of studies focus on one or the other; however, the comparison of the two has attracted somewhat increased interest in the 21st century, with several studies examining the concepts of ethnicity, identity, and the views of foreigners.

History

Walter Scheidel reviewed the previous scholarship when he explained the purpose of Stanford University's Ancient Chinese and Mediterranean Empires Comparative History Project and the framework of its study in the early 21st century. Max Weber and Karl August Wittfogel both wrote works comparing the ancient Mediterranean and China; however, their studies have had little influence on later historians of the ancient world. Scheidel gives this as a contributing cause to the relative paucity of comparative studies between the two. The majority of the research in the subject area has concentrated on looking at the intellectual and philosophical history of each society. He also noted a change in the direction of research in the 2000s, with a refocusing on the "nature of moral, historical, and scientific thought" in Ancient Greece and China.

Several scholars have made comparative studies of the two empires. As historian Samuel Adshead puts it, "Other comparisons could be made ... None, however, offers so close a parallel with Han China as the Roman empire". These have tended to focus on the philosophical and intellectual histories of China and the Greco-Roman world, and despite modern interest, gaps remain in the scholarship comparing Rome and the Han Empire. Scheidel notes that there are no comparative studies of high culture; there is also a virtual absence of work on "political, social, economic or legal history" of the Greco-Roman world and ancient China. However, he does note that Adshead does briefly address the issue. Wittfogel's work has come in for criticism by later historians, but his studies have not fully been supplanted by up to date theses. In modern studies of imperialism, ancient China has generally been overlooked. In Scheidel's words, "[compared to the study of Europe and China in the early modern period] the comparative history of the largest agrarian empires of antiquity has attracted no attention at all. This deficit is only explicable with reference to academic specialization and language barriers".

The emergence of the United States of America as effectively the only superpower in the world after the fall of the Soviet Union in the late 20th century led to a renewed interest in empires and their study. For instance, the Roman Empire has occasionally been held up as a model for American dominance. The United States' hegemony is unprecedented in the modern system and thus the only illuminating cases can be found in pre-modern systems: “One difficulty with analyzing unipolarity is that we have mainly the current case, although examining the Roman and ancient China could be illuminating.”

In general, with the rise of the American primacy the study of historical empires, such as Han China and Rome, increased. In the field of comparative studies between empires, not just Rome and China, Shmuel Eisenstadt's The Political System of Empires (1963) has been described as influential as it pioneered the comparative approach. The act of comparing the Roman and Han empires is aided by the amount of written evidence from both, as well as other artefactual sources. In the words of Fritz-Heiner Mutschler and Achim Mittag, "Comparing the Roman and Chinese empires contributes not only to understanding the trajectories along which the two civilizations developed, but also to heightening our awareness of possible analogies between the present and the past, be it with regard to America or China." Recent work by Ronald A. Edwards shows how such comparisons can be helpful in understanding ancient Chinese and Roman political institutions.

Society

Principles of sociological examination have been identified that can be applied to the study of China and Rome. They draw on analytical and illustrative comparisons.

Political structure

One of the most appealing reasons for historians to begin comparing China and Rome, is their ascent to political hegemony over the Mediterranean and East Asia. However, political comparisons by Adshead have received negative response from Chinese history experts; citing his lack of use of Chinese sources, poor support of his arguments and an eagerness to take poorly supported points as facts.

Nonetheless more recently, China scholars have been engaging in comparative work on political institutions between China and Rome – see work by Ronald A. Edwards – and between China the early modern Europe – see work by Victoria Tin-bor Hui.

Rationale

According to Adshead's book China in World History, comparing Han China and the Roman Empire gives context and assists understanding of China's interactions and relations with other civilisations of Antiquity. In his China and the Roman Empire before Constantine, their "differences outweighed the similarities". In the opinion of Scheidel:
only comparisons with other civilizations make it possible to distinguish common features from culturally specific or unique characteristics and developments, help us identify variables that were critical to particular historical outcomes and allow us to assess the nature of any given ancient state or society within the wider context of premodern world history.

Nightmare

From Wikipedia, the free encyclopedia

Nightmare
Museo del Prado - Goya - Caprichos - No. 43 - El sueƱo de la razon produce monstruos.jpg
The Sleep of Reason Produces Monsters (Francisco de Goya, c. 1797)
SpecialtyPsychology Psychiatry
CausesStress or Anxiety

A nightmare, also called a bad dream, is an unpleasant dream that can cause a strong emotional response from the mind, typically fear but also despair, anxiety and great sadness. However, psychological nomenclature differentiates between nightmares and bad dreams, specifically, people remain asleep during bad dreams whereas nightmares awaken individuals. Further, the process of psychological homeostasis employs bad dreams to protect an individual's Homeostatically Protected Mood (HPMood) from the impact of elevated anxiety levels. During sleep, nightmares indicate the failure of the homeostatic system employing bad dreams to extinguish anxiety accumulated throughout the day. The dream may contain situations of discomfort, psychological or physical terror or panic. After a nightmare, a person will often awaken in a state of distress and may be unable to return to sleep for a short period of time.

Nightmares can have physical causes such as sleeping in an uncomfortable position or having a fever, or psychological causes such as stress or anxiety. Eating before going to sleep, which triggers an increase in the body's metabolism and brain activity, is a potential stimulus for nightmares.

Recurrent nightmares may require medical help, as they can interfere with sleeping patterns and cause insomnia.

Signs and symptoms

Those with nightmares experience abnormal sleep architecture and that the results of having a nightmare during the night were very similar to those of people who have insomnia. This is thought to be caused by frequent nocturnal awakenings and fear of falling asleep.

Classification

According to the International Classification of Sleep Disorders-Third Edition (ICSD-3) the nightmare disorder, together with REM sleep behaviour disorder (RBD) and recurrent isolated sleep paralysis form the REM-related parasomnias subcategory of the Parasomnias cluster. Nightmares may be idiopathic without any signs of psychopathology or associated with disorders like stress, anxiety, substance abuse, psychiatric illness or PTSD (>80% of PTSD patients report nightmares). As regarding the dream content of the dreams they are usually imprinting negative emotions like sadness, fear or rage. According to the clinical studies the content can range from being chased, injury or death of others, falling, natural disasters or accidents. Typical dreams or recurrent dreams may also have some of these topics.

Cause

Scientific research shows that nightmares may have many causes. In a study focusing on children, researchers were able to conclude that nightmares directly correlate with the stress in children’s lives. Children who experienced the death of a family member or a close friend or know someone with a chronic illness have more frequent nightmares than those who are only faced with stress from school or stress from social aspects of daily life. A study researching the causes of nightmares focuses on patients who have sleep apnea. The study was conducted to determine whether or not nightmares may be caused by sleep apnea, or being unable to breathe. In the nineteenth century, authors believed that nightmares were caused by not having enough oxygen, therefore it was believed that those with sleep apnea had more frequent nightmares than those without it. The results actually showed that healthy people have more nightmares than the sleep apnea patients. Another study supports the hypothesis. In this study, 48 patients (aged 20–85 yrs) with obstructive airways disease (OAD), including 21 with and 27 without asthma, were compared with 149 sex- and age-matched controls without respiratory disease. OAD subjects with asthma reported approximately 3 times as many nightmares as controls or OAD subjects without asthma. The evolutionary purpose of nightmares then could be a mechanism to awaken a person who is in danger. 

Lucid-dreaming advocate Stephen LaBerge has outlined a possible reason for how dreams are formulated and why nightmares occur with a high frequency. To LaBerge, a dream starts with an individual thought or scene, such as walking down a dimly lit street. Since dreams are not predetermined, the brain responds to the situation by either thinking a good thought or a bad thought, and the dream framework follows from there. Since the prominence of bad thoughts in dreams is higher than good, the dream will proceed to be a nightmare.

There is a view, possibly featured in the story A Christmas Carol, that eating cheese before sleep can cause nightmares, but there is little scientific evidence for this phenomenon.

Treatment

Sigmund Freud and Carl Jung seemed to have shared a belief that people frequently distressed by nightmares could be re-experiencing some stressful event from the past. Both perspectives on dreams suggest that therapy can provide relief from the dilemma of the nightmarish experience.

Halliday (1987), grouped treatment techniques into four classes. Direct nightmare interventions that combine compatible techniques from one or more of these classes may enhance overall treatment effectiveness:

Posttraumatic stress disorder

Recurring posttraumatic stress disorder nightmares in which traumas are re-experienced respond well to a technique called imagery rehearsal. This involves dreamers coming up with alternative, mastery outcomes to the nightmares, mentally rehearsing those outcomes while awake, and then reminding themselves at bedtime that they wish these alternate outcomes should the nightmares reoccur. Research has found that this technique not only reduces the occurrence of nightmares and insomnia, but also improves other daytime PTSD symptoms. The most common variations of Imagery Rehearsal Therapy (IRT) "relate to the number of sessions, duration of treatment, and the degree to which exposure therapy is included in the protocol". The medication prazosin appears useful in decreasing the number of nightmares and the distress caused by them in people with PTSD.

Epidemiology

The prevalence in children (5–12 years old) is between 20 and 30%, and in adults 8 to 30%.

Etymology

The word "nightmare" is derived from the Old English "mare", a mythological demon or goblin who torments others with frightening dreams. The term has no connection with the word for "female horse." Subsequently, the prefix "night-" was added to stress the dream aspect. The word "nightmare" is cognate with the Dutch term nachtmerrie and German Nachtmahr (dated).

Mass surveillance

From Wikipedia, the free encyclopedia
 
Mass surveillance is the intricate surveillance of an entire or a substantial fraction of a population in order to monitor that group of citizens. The surveillance is often carried out by local and federal governments or governmental organisations, such as organizations like the NSA and the FBI, but it may also be carried out by corporations (either on behalf of governments or at their own initiative). Depending on each nation's laws and judicial systems, the legality of and the permission required to engage in mass surveillance varies. It is the single most indicative distinguishing trait of totalitarian regimes. It is also often distinguished from targeted surveillance.

Mass surveillance has often been cited as necessary to fight terrorism, prevent crime and social unrest, protect national security, and control the population. Conversely, mass surveillance has equally often been criticized for violating privacy rights, limiting civil and political rights and freedoms, and being illegal under some legal or constitutional systems. Another criticism is that increasing mass surveillance could lead to the development of a surveillance state or an electronic police state where civil liberties are infringed or political dissent is undermined by COINTELPRO-like programs. Such a state could be referred to as a totalitarian state.

In 2013, the practice of mass surveillance by world governments was called into question after Edward Snowden's 2013 global surveillance disclosure. Reporting based on documents Snowden leaked to various media outlets triggered a debate about civil liberties and the right to privacy in the Digital Age. Mass surveillance is considered a global issue.

By country

Privacy International's 2007 survey, covering 47 countries, indicated that there had been an increase in surveillance and a decline in the performance of privacy safeguards, compared to the previous year. Balancing these factors, eight countries were rated as being 'endemic surveillance societies'. Of these eight, China, Malaysia and Russia scored lowest, followed jointly by Singapore and the United Kingdom, then jointly by Taiwan, Thailand and the United States. The best ranking was given to Greece, which was judged to have 'adequate safeguards against abuse'.

Many countries throughout the world have already been adding thousands of surveillance cameras to their urban, suburban and even rural areas. For example, in September 2007 the American Civil Liberties Union (ACLU) stated that we are "in danger of tipping into a genuine surveillance society completely alien to American values" with "the potential for a dark future where our every move, our every transaction, our every communication is recorded, compiled, and stored away, ready to be examined and used against us by the authorities whenever they want."

On 12 March 2013, Reporters Without Borders published a Special report on Internet Surveillance. The report included a list of "State Enemies of the Internet", countries whose governments are involved in active, intrusive surveillance of news providers, resulting in grave violations of freedom of information and human rights. Five countries were placed on the initial list: Bahrain, China, Iran, Syria, and Vietnam.

Bahrain

Bahrain is one of the five countries on Reporters Without Borders' March 2013 list of "State Enemies of the Internet", countries whose governments are involved in active, intrusive surveillance of news providers, resulting in grave violations of freedom of information and human rights. The level of Internet filtering and surveillance in Bahrain is one of the highest in the world. The royal family is represented in all areas of Internet management and has sophisticated tools at its disposal for spying on its subjects. The online activities of dissidents and news providers are closely monitored and the surveillance is increasing.

China

China is one of the five countries on Reporters Without Borders' March 2013 list of "State Enemies of the Internet", countries whose governments are involved in active, intrusive surveillance of news providers, resulting in grave violations of freedom of information and human rights. All Internet access in China is owned or controlled by the state or the Communist Party. Many foreign journalists in China have said that they take for granted that their telephones are tapped and their email is monitored.

The tools put in place to filter and monitor the Internet are collectively known as the Great Firewall of China. Besides the usual routing regulations that allow access to an IP address or a particular domain name to be blocked, the Great Firewall makes large-scale use of Deep Packet Inspection (DPI) technology to monitor and block access based on keyword detection. The Great Firewall has the ability to dynamically block encrypted connections. One of the country's main ISPs, China Unicom, automatically cuts a connection as soon as it is used to transmit encrypted content.

The monitoring system developed by China is not confined to the Great Firewall, monitoring is also built into social networks, chat services and VoIP. Private companies are directly responsible to the Chinese authorities for surveillance of their networks to ensure banned messages are not circulated. The QQ application, owned by the firm Tencent, allows the authorities to monitor in detail exchanges between Internet users by seeking certain keywords and expressions. The author of each message can be identified by his or her user number. The QQ application is effectively a giant Trojan horse. And since March 2012, new legislation requires all new users of micro-blogging sites to register using their own name and telephone number.

Skype, one of the world's most popular Internet telephone platforms, is closely monitored. Skype services in China are available through a local partner, the TOM media group. The Chinese-language version of Skype, known as TOM-Skype, is slightly different from the downloadable versions in other countries. A report by OpenNet Initiative Asia says everyday conversations are captured on servers. Interception and storage of a conversation may be triggered by a sender's or recipient's name or by keywords that occur in the conversation.

On 30 January, the New York Times reported that it had been the target of attacks by the Chinese government. The first breach took place on 13 September 2012 when the newspaper was preparing to publish an article about the fortune amassed by the family of outgoing Prime Minister Wen Jiabao. The newspaper said the purpose of attacks was to identify the sources that supplied the newspaper with information about corruption among the prime minister's entourage. The Wall Street Journal and CNN also said they had been the targets of cyber attacks from China. In February, Twitter disclosed that the accounts of some 250,000 subscribers had been the victims of attacks from China similar to those carried out on the New York Times. Mandiant, the company engaged by the NYT to secure its network, identified the source of the attacks as a group of hackers it called Advanced Persistent Threat 1, a unit of the People's Liberation Army operating from a 12-story building in the suburbs of Shanghai that had hundreds, possibly thousands, of staff and the direct support of the Chinese government.

The newest form of mass surveillance in China is the Social Credit System, where citizens and businesses are given or deducted good behavior points depending on their choices.

According to UK-based technology research organization, Comparitech, a city in China called Chongqing is the most surveilled city in the entire world, with 2.5m cameras watching over almost 15.35 million people. As per the data accumulated, the Chinese city beats Shanghai, Beijing, and Shenzhen, in terms of mass surveillance in China.

East Germany

Before the Digital Revolution, one of the world's biggest mass surveillance operations was carried out by the Stasi, the secret police of the former East Germany. By the time the state collapsed in 1989, the Stasi had built up an estimated civilian network of 300,000 informants (approximately one in fifty of the population), who monitored even minute hints of political dissent among other citizens. Many West Germans visiting friends and family in East Germany were also subject to Stasi spying, as well as many high-ranking West German politicians and persons in the public eye.

Most East German citizens were well aware that their government was spying on them, which led to a culture of mistrust: touchy political issues were only discussed in the comfort of their own four walls and only with the closest of friends and family members, while widely maintaining a faƧade of unquestioning followership in public.

European Union

The right to privacy is a highly developed area of law in Europe. The Data Protection Directive regulates the processing of personal data within the European Union. For comparison, the US has no data protection law that is comparable to this; instead, the US regulates data protection on a sectoral basis.

Since early 2012, the European Union has been working on a General Data Protection Regulation to replace the Data Protection Directive and harmonise data protection and privacy law. On 20 October 2013, a committee at the European Parliament backed the measure, which, if it is enacted, could require American companies to seek clearance from European officials before complying with United States warrants seeking private data. The vote is part of efforts in Europe to shield citizens from online surveillance in the wake of revelations about a far-reaching spying program by the U.S. National Security Agency. European Union justice and rights commissioner Viviane Reding said "The question has arisen whether the large-scale collection and processing of personal information under US surveillance programmes is necessary and proportionate to meet the interests of national security." The EU is also asking the US for changes to US legislation to match the legal redress offered in Europe; American citizens in Europe can go to the courts if they feel their rights are infringed but Europeans without right of residence in America cannot. When the EU / US arrangement to implement International Safe Harbor Privacy Principles were struck down by the European Court of Justice, a new framework for transatlantic data flows, called the "EU-US Privacy Shield", was adopted in July 2016.

In April 2014, the European Court of Justice declared invalid the EU Data Retention Directive. The Court said it violates two basic rights - respect for private life and protection of personal data. The legislative body of the European Union passed the Data Retention Directive on 15 December 2005. It requires that telecommunication operators retain metadata for telephone, Internet, and other telecommunication services for periods of not less than six months and not more than two years from the date of the communication as determined by each EU member state and, upon request, to make the data available to various governmental bodies. Access to this information is not limited to investigation of serious crimes, nor is a warrant required for access.

Undertaken under the Seventh Framework Programme for research and technological development (FP7 - Science in Society) some multidisciplinary and mission oriented mass surveillance activities (for example INDECT and HIDE) were funded by the European Commission in association with industrial partners. The INDECT Project ("Intelligent information system supporting observation, searching and detection for security of citizens in urban environment") develops an intelligent urban environment observation system to register and exchange operational data for the automatic detection, recognition and intelligent processing of all information of abnormal behaviour or violence.

The main expected results of the INDECT project are:
  • Trial of intelligent analysis of video and audio data for threat detection in urban environments,
  • Creation of tools and technology for privacy and data protection during storage and transmission of information using quantum cryptography and new methods of digital watermarking,
  • Performing computer-aided detection of threats and targeted crimes in Internet resources with privacy-protecting solutions,
  • Construction of a search engine for rapid semantic search based on watermarking of content related to child pornography and human organ trafficking,
  • Implementation of a distributed computer system that is capable of effective intelligent processing.
HIDE ("Homeland Security, Biometric Identification & Personal Detection Ethics") was a research project funded by the European Commission within the scope of the Seventh RTD Framework Programme (FP7). The consortium, coordinated by Emilio Mordini, explored the ethical and privacy implications of biometrics and personal detection technologies, focusing on the continuum between personal detection, authentication, identification and mass surveillance.

Germany

In 2002 German citizens were tipped off about wiretapping when a software error led to a phone number allocated to the German Secret Service being listed on mobile telephone bills.

India

The Indian parliament passed the Information Technology Act of 2008 with no debate, giving the government fiat power to tap all communications without a court order or a warrant. Section 69 of the act states "Section 69 empowers the Central Government/State Government/ its authorized agency to intercept, monitor or decrypt any information generated, transmitted, received or stored in any computer resource if it is necessary or expedient so to do in the interest of the sovereignty or integrity of India, defence of India, security of the State, friendly relations with foreign States or public order or for preventing incitement to the commission of any cognizable offence or for investigation of any offence."

India is setting up a national intelligence grid called NATGRID, which would be fully set up by May 2011 where each individual's data ranging from land records, Internet logs, air and rail PNR, phone records, gun records, driving license, property records, insurance, and income tax records would be available in real time and with no oversight. With a UID from the Unique Identification Authority of India being given to every Indian from February 2011, the government would be able track people in real time. A national population registry of all citizens will be established by the 2011 census, during which fingerprints and iris scans would be taken along with GPS records of each household.

As per the initial plan, access to the combined data will be given to 11 agencies, including the Research and Analysis Wing, the Intelligence Bureau, the Enforcement Directorate, the National Investigation Agency, the Central Bureau of Investigation, the Directorate of Revenue Intelligence and the Narcotics Control Bureau

Several states within India have already installed CCTV surveillance systems with face matching capabilities using biometrics in Aadhaar. Andhra Pradesh and Telangana are using information linked with Aadhaar across different agencies to create a 360-degree profile of a person, calling it the Integration Information Hub. Other states are now planning to follow this model.

Iran

Iran is one of the five countries on Reporters Without Borders' March 2013 list of "State Enemies of the Internet", countries whose governments are involved in naturally active efforts to news providers . The government runs or controls almost all of the country's institutions for regulating, managing or legislating on telecommunications. The Supreme Council for Cyberspace, which was headed by President Ahmadinejad, was established in March 2012 and now determines digital policy. The construction of a parallel "Iranian Internet", with a high connection speed but fully monitored and censored, is almost complete.

The tools used by the Iranian authorities to monitor and control the Internet include data interception tools capable of Deep Packet Inspection. Interception products from leading Chinese companies such as ZTE and Huawei are in use. The products provided by Huawei to Mobin Net, the leading national provider of mobile broadband, can be used to analyze email content, track browsing history and block access to sites. The products that ZTA sold to the Telecommunication Company of Iran (TCI) offer similar services plus the possibility of monitoring the mobile network. European companies are the source of other spying and data analysis tools. Products designed by Ericsson and Nokia Siemens Networks (later Trovicor) are in use. These companies sold SMS interception and user location products to Mobile Communication Company of Iran and Irancell, Iran's two biggest mobile phone companies, in 2009 and they were used to identify Iranian citizens during the post-election uprising in 2009. The use of Israeli surveillance devices has also been detected in Iran. The network traffic management and surveillance device NetEnforcer was provided by Israel to Denmark and then resold to Iran. Similarly, US equipment has found its way to Iran via the Chinese company ZTE.

Malaysia

In July 2018, the Malaysian police announced the creation of the Malaysian Internet Crime Against Children Investigation Unit (Micac) that is equipped with real-time mass internet surveillance software developed in the United States and is tasked with the monitoring of all Malaysian internet users, with a focus on pornography and child pornography. The system creates a "data library" of users which includes details such as IP addresses, websites, locations, duration and frequency of use and files uploaded and downloaded.

Mexico

After struggling with drug trafficking and criminal groups for decades Mexico has been strengthening their military mass surveillance. Approximately half of the population in Mexico does not support democracy as a form of government, and believe an authoritarian system is better if social matters are solved through it. The relevance of these political beliefs may make it easier for mass surveillance to take spread within the country. "This does not necessarily mean the end of democratic institutions as a whole—such as free elections or the permanence of critical mass media—but it means strengthening the mechanisms for exercising power that exclude dialogue, transparency and social agreement." Developing intelligence agencies has been on Mexico's radar for a while for means of security.

Netherlands

According to a 2004 report, the government of the Netherlands carries out more clandestine wire-taps and intercepts than any country, per capita, in the world. The Dutch military intelligence service MIVD operates a satellite ground station to intercept foreign satellite links and also a facility to eavesdrop on foreign high-frequency radio traffic.

North Korea

Having attained the nickname 'surveillance state', North Korea's government has complete control over all forms of telecommunications and Internet. It is routine to be sent to a prison camp for communicating with the outside world. The government enforces restrictions around the types of appliances North Koreans may own in their home, in case radio or TV sets pick up signals from nearby South Korea, China and Russia. There is no attempt to mask the way this government actively spies on their citizens. In North Korea, an increasing number of citizens do have smartphones. However, these devices are heavily controlled and are being used to censor and observe everything North Koreans do on their phones. Reuters reported in 2015 that Koryolink, North Korea's official mobile phone network, has around 3 million subscribers in a country of 24 million. Obviously, in order to have digital data to draw from, the citizens must have access to phones and other things online.

Russia

The SORM (and SORM-2) laws enable complete monitoring of any communication, electronic or traditional, by eight state agencies, without warrant. These laws seem to be in conflict with Article 23 of the Constitution of Russia which states:
  1. Everyone shall have the right to the inviolability of private life, personal and family secrets, the protection of honour and good name.
  2. Everyone shall have the right to privacy of correspondence, of telephone conversations, postal, telegraph and other messages. Limitations of this right shall be allowed only by court decision.

Yarovaya Law required storage and unconditional access to private communication data for law enforcement.

Singapore

Singapore is known as a city of sensors. Singapore's surveillance structure spreads widely from Closed-circuit television in public areas even around the neighbourhood, internet monitoring/ traffic monitoring and to the use of surveillance metadata for government initiatives. In Singapore, SIM card registration is mandatory even for prepaid card. Singapore's government have the rights to access communication data. Singapore's largest telecompany, Singtel, has close relations to the government and Singapore's laws are broadly phrased to allow the government to obtain sensitive data such as text-messages, email, call logs and web surfing history from its people without the need for court permission.

The installation of mass surveillance cameras in Singapore is an effort to act as a deterrence not only for terror attacks but also for public security such as loan sharks, illegal parking and more. As part of Singapore's Smart Nation initiative to build a network of sensors to collect and connect data from city life (including the citizen's movement), the Singapore government rolled out 1000 sensors ranging from computer chips to surveillance cameras, to track almost everything in Singapore from air quality to public safety in 2014.

In 2016, in a bid to increase security, the Singapore Police Force installed 62,000 police cameras in 10,000 Housing and Development Board (HDB) blocks covering the lifts and multi-storey car parks. With rising security concerns, the number of CCTV cameras in public areas such as monitoring of the public transport system and commercial/ government buildings in Singapore is set to increase.

In 2018, the Singapore government would be rolling out new and more advanced surveillance systems. Starting with Singapore's maritime borders, new panoramic electro-optic sensors will be put in place on the north and south coasts, monitoring a 360-degree view of the area. A tethered unmanned aerial vehicle (UAV) will also be operational, which can be used during search and rescue operations including hostage situations and public order incidents.

Spain

According to a 2017 report by Privacy International, Spain may be part of a group of 21 European countries that is withholding information, also known as data retention. In 2014, many defense lawyers tried to overturn multiple cases that used mass storage as their evidence to convict, according to the European Agency for Fundamental Rights.

Sweden

Prior to 2009, the National Defence Radio Establishment (FRA) was limited to wireless signals intelligence (SIGINT), although it was left largely unregulated. In December 2009, new legislation went into effect, allowing the FRA to monitor cable bound signals passing the Swedish border. Communications service providers are legally required, under confidentiality, to transfer cable communications crossing Swedish borders to specific "interaction points", where data may be accessed after a court order.

The FRA has been contested since the change in its legislation, mainly because of the public perception the change would enable mass surveillance. The FRA categorically deny this allegation, as they are not allowed to initialize any surveillance on their own, and has no direct access to communication lines. All SIGINT has to be authorized by a special court and meet a set of narrow requirements, something Minister for Defence Sten Tolgfors have been quoted as saying, "should render the debate on mass surveillance invalid." Due to the architecture of Internet backbones in the Nordic area, a large portion of Norwegian and Finnish traffic will also be affected by the Swedish wiretapping.

Syria

Syria is one of the five countries on Reporters Without Borders' March 2013 list of "State Enemies of the Internet", countries whose governments are involved in active, intrusive surveillance of news providers, resulting in grave violations of freedom of information and human rights. Syria has stepped up its web censorship and cyber-monitoring as the country's civil war has intensified. At least 13 Blue Coat proxy servers are in use, Skype calls are intercepted, and social engineering techniques, phishing, and malware attacks are all in use.

Turkey

The failed coup attempt 15 June 2016 led to an authoritarian shift that uses mass surveillance to suppress opposite views. Digital surveillance is part of everyday life due to the box the government puts the Turkish citizens in. They have a digital and physical strong hold over any knowledge that goes against their regime. Today, the surveillance of academicians goes along with the state's oppression in Turkey. It is hard to say what will happen in the next few years in Turkey as they become increasingly more authoritarian. The centralization of state power along with digitalization expands the scope of the state surveillance. The digitalization and the centralization of state power are closely related to the regime of power that becomes prominent in this conjuncture. National security and terrorism are Turkey's main explanations to the world on this topic, although there is clearly more happening there. According to the report of Human Rights Joint Platform published on 23 February 2017, during the nine months period of the state of emergency, the number of dismissed academicians reached 4,811, increasing to 7,619 with the addition of academicians who were working in the universities closed after the failed coup attempt. The extended surveillance in Turkey helped them to control the population at a massive scale.

United Arab Emirates

In October 2016, The Intercept released a report detailing the experience of an Italian security researcher Simone Margaritelli, of allegedly being hired for mass surveillance operations run by United Arab Emirates. According to Margaritelli, he was called for an interview with the Abu Dhabi-based cybersecurity firm called DarkMatter. Margaritelli says he declined the offer and instead wrote a blog post titled “How the United Arab Emirates Intelligence Tried to Hire Me to Spy on Its People”. In response to The Intercept inquiries, DarkMatter responded by stating: “No one from DarkMatter or its subsidiaries have ever interviewed Mr. Margaritelli.” Kevin Healy, director of communications for DarkMatter, wrote in an email responding to The Intercept that the man Margaritelli says interviewed him was previously only an advisory consultant to DarkMatter and is currently no longer an advisor to the company. Dark Matter responded by saying “While we respect an author’s right to express a personal opinion, we do not view the content in question as credible, and therefore have no further comment.” 

In January 2019, Reuters released a detailed account of a 2014 state-surveillance operation – dubbed as Project Raven – led by the United Arab Emirates with the help of former NSA officials like Lori Stroud, an ex-NSA cyberspy. Counter-terrorism strategy was the primary motive of setting up the unit. However, soon the project began being used as a surveillance program to spy on rival leaders, critical dissidents and journalists.

In December 2019, Google Play Store and Apple App Store removed an Emirati messaging application called ToTok following allegations that it was a state surveillance application, according to The New York Times report. The application's privacy policy clearly stated that it may share personal data of the users with “regulatory agencies, law enforcement, and other lawful access requests.” The allegations were denied by the co-founders of ToTok, Giacomo Ziani and Long Ruan, respectively. The application was restored on Google Play Store later on.

United Kingdom

State surveillance in the United Kingdom has formed part of the public consciousness since the 19th century. The postal espionage crisis of 1844 sparked the first panic over the privacy of citizens. However, in the 20th century, electronic surveillance capabilities grew out of wartime signal intelligence and pioneering code breaking. In 1946, the Government Communications Headquarters (GCHQ) was formed. The United Kingdom and the United States signed the bilateral UKUSA Agreement in 1948. It was later broadened to include Canada, Australia and New Zealand, as well as cooperation with several "third-party" nations. This became the cornerstone of Western intelligence gathering and the "Special Relationship" between the UK and the USA.

After the growth of the Internet and development of the World Wide Web, a series of media reports in 2013 revealed more recent programs and techniques involving GCHQ, such as Tempora.

The use of these capabilities is controlled by laws made in the UK Parliament. In particular, access to the content of private messages (that is, interception of a communication) must be authorized by a warrant signed by a Secretary of State. In addition European Union data privacy law applies in UK law. The UK exhibits governance and safeguards as well as use of electronic surveillance.

The Investigatory Powers Tribunal, a judicial oversight body for the intelligence agencies, ruled in December 2014 that the legislative framework in the United Kingdom does not breach the European Convention on Human Rights. However, the Tribunal stated in February 2015 that one particular aspect, the data sharing arrangement that allowed UK Intelligence services to request data from the US surveillance programs Prism and Upstream, had been in contravention of human rights law prior to this until two paragraphs of additional information, providing details about the procedures and safeguards, were disclosed to the public in December 2014.

In its December 2014 ruling, the Investigatory Powers Tribunal found that the legislative framework in the United Kingdom does not permit mass surveillance and that while GCHQ collects and analyses data in bulk, it does not practice mass surveillance. A report on Privacy and Security published by the Intelligence and Security Committee of Parliament also came to this view, although it found past shortcomings in oversight and said the legal framework should be simplified to improve transparency. This view is supported by independent reports from the Interception of Communications Commissioner. However, notable civil liberties groups continue to express strong views to the contrary and plan to appeal the ruling to the European Court of Human Rights, while others have criticised these viewpoints in turn.

RAF Menwith Hill, a large site in the United Kingdom, part of ECHELON and the UKUSA Agreement
 
The Regulation of Investigatory Powers Act 2000 (RIP or RIPA) is a significant piece of legislation that granted and regulated the powers of public bodies to carry out surveillance and investigation. In 2002 the UK government announced plans to extend the Regulation of Investigatory Powers Act so that at least 28 government departments would be given powers to access metadata about citizens' web, e-mail, telephone and fax records, without a warrant and without a subject's knowledge.

The Protection of Freedoms Act 2012 includes several provisions related to controlling and restricting the collection, storage, retention, and use of information in government databases.

Supported by all three major political parties, the UK Parliament passed the Data Retention and Investigatory Powers Act in July 2014 to ensure police and security services retain existing powers to access phone and Internet records.

This was superseded by the Investigatory Powers Act 2016, a comprehensive statute which made public a number of previously secret powers (equipment interference, bulk retention of metadata, intelligence agency use of bulk personal datasets), and enables the Government to require internet service providers and mobile phone companies to maintain records of (but not the content of) customers' Internet connections for 12 months. In addition, it created new safeguards, including a requirement for judges to approve the warrants authorised by a Secretary of State before they come into force. The Act was informed by two reports by David Anderson QC, the UK's Independent Reviewer of Terrorism Legislation: A Question of Trust (2015) and the report of his Bulk Powers Review (2016), which contains a detailed appraisal (with 60 case studies) of the operational case for the powers often characterised as mass surveillance. It may yet require amendment as a consequence of legal cases brought before the Court of Justice of the European Union and the European Court of Human Rights.

Many advanced nation-states have implemented laws that partially protect citizens from unwarranted intrusion, such as the Human Rights Act 1998 and Data Protection Act 1998 in the United Kingdom, and laws that require a formal warrant before private data may be gathered by a government.

The vast majority of video surveillance cameras in the UK are not operated by government bodies, but by private individuals or companies, especially to monitor the interiors of shops and businesses. According to 2011 Freedom of Information Act requests, the total number of local government operated CCTV cameras was around 52,000 over the entirety of the UK. The prevalence of video surveillance in the UK is often overstated due to unreliable estimates being requoted; for example one report in 2002 extrapolated from a very small sample to estimate the number of cameras in the UK at 4.2 million (of which 500,000 in London). More reliable estimates put the number of private and local government operated cameras in the United Kingdom at around 1.85 million in 2011.

United States

Historically, mass surveillance was used as part of wartime censorship to control communications that could damage the war effort and aid the enemy. For example, during the world wars, every international telegram from or to the United States sent through companies such as Western Union was reviewed by the US military. After the wars were over, surveillance continued in programs such as the Black Chamber following World War I and project Shamrock following World War II. COINTELPRO projects conducted by the U.S. Federal Bureau of Investigation (FBI) between 1956 and 1971 targeted various "subversive" organizations, including peaceful anti-war and racial equality activists such as Albert Einstein and Martin Luther King Jr

Billions of dollars per year are spent, by agencies such as the National Security Agency (NSA) and the Federal Bureau of Investigation (FBI), to develop, purchase, implement, and operate systems such as Carnivore, ECHELON, and NarusInsight to intercept and analyze the immense amount of data that traverses the Internet and telephone system every day.

Since the September 11 attacks, a vast domestic (and to some extent, global) intelligence apparatus has been built to collect information using the NSA, FBI, local police, state homeland security offices and military criminal investigators. The intelligence apparatus collects, analyzes and stores information about millions of (if not all) American (and sometimes foreign) citizens, many of whom have not been accused of any wrongdoing.

Under the Mail Isolation Control and Tracking program, the U.S. Postal Service photographs the exterior of every piece of paper mail that is processed in the United States – about 160 billion pieces in 2012. The U.S. Postmaster General stated that the system is primarily used for mail sorting, but the images are available for possible use by law enforcement agencies. Created in 2001 following the anthrax attacks that killed five people, it is a sweeping expansion of a 100-year-old program called "mail cover" which targets people suspected of crimes.

The FBI developed the computer programs "Magic Lantern" and CIPAV, which they can remotely install on a computer system, in order to monitor a person's computer activity.

The NSA has been gathering information on financial records, Internet surfing habits, and monitoring e-mails. They have also performed extensive analysis of social networks such as Myspace.

The PRISM special source operation system legally immunized private companies that cooperate voluntarily with U.S. intelligence collection. According to The Register, the FISA Amendments Act of 2008 "specifically authorizes intelligence agencies to monitor the phone, email, and other communications of U.S. citizens for up to a week without obtaining a warrant" when one of the parties is outside the U.S. PRISM was first publicly revealed on 6 June 2013, after classified documents about the program were leaked to The Washington Post and The Guardian by American Edward Snowden.

The Communications Assistance for Law Enforcement Act (CALEA) requires that all U.S. telecommunications and Internet service providers modify their networks to allow easy wiretapping of telephone, VoIP, and broadband Internet traffic.

In early 2006, USA Today reported that several major telephone companies were providing the telephone call records of U.S. citizens to the National Security Agency (NSA), which is storing them in a large database known as the NSA call database. This report came on the heels of allegations that the U.S. government had been conducting electronic surveillance of domestic telephone calls without warrants. In 2013, the existence of the Hemisphere Project, through which AT&T provides telephone call data to federal agencies, became publicly known.

Traffic cameras, which were meant to help enforce traffic laws at intersections, may be used by law enforcement agencies for purposes unrelated to traffic violations. Some cameras allow for the identification of individuals inside a vehicle and license plate data to be collected and time stamped for cross reference with other data used by police. The Department of Homeland Security is funding networks of surveillance cameras in cities and towns as part of its efforts to combat terrorism.

The New York City Police Department infiltrated and compiled dossiers on protest groups before the 2004 Republican National Convention, leading to over 1,800 arrests.

Modern surveillance in the United States was thought of more of a wartime effort before Snowden disclosed in depth information about the National Security Agency in June 2013. The constant development and improvements of the Internet and technology has made it easier for mass surveillance to take hold. Such revelations allow critical commentators to raise questions and scrutinize the implementation, use, and abuse of networking technologies, devices, and software systems that partake in a "global surveillant assemblage" (Bogard 2006; Collier and Ong 2004; Haggerty and Ericson 2000; Murakami Wood 2013). The NSA collected millions of Verizon user's telephone records in between 2013–2014. The NSA also collected data through Google and Facebook with a program called 'Prism'. Journalists through Snowden published nearly 7,000 top-secret documents since then, yet the information disclosed seems to be less than 1% of the entire information. Having access to every individual's private records seems to directly contradict the fourth amendment.

Vietnam

Vietnam is one of the five countries on Reporters Without Borders' March 2013 list of "State Enemies of the Internet", countries whose governments are involved in active, intrusive surveillance of news providers, resulting in grave violations of freedom of information and human rights. Most of the country's 16 service providers are directly or indirectly controlled by the Vietnamese Communist Party. The industry leader, Vietnam Posts and Telecommunications Group, which controls 74 per cent of the market, is state-owned. So is Viettel, an enterprise of the Vietnamese armed forces. FPT Telecom is a private firm, but is accountable to the Party and depends on the market leaders for bandwidth.

Service providers are the major instruments of control and surveillance. Bloggers monitored by the government frequently undergo man-in-the-middle attacks. These are designed to intercept data meant to be sent to secure (https) sites, allowing passwords and other communication to be intercepted. According to a July 2012 Freedom House report, 91 percent of survey respondents connected to the Internet on their mobile devices and the government monitors conversations and tracks the calls of "activists" or "reactionaries."

Commercial mass surveillance

As a result of the digital revolution, many aspects of life are now captured and stored in digital form. Concern has been expressed that governments may use this information to conduct mass surveillance on their populations. Commercial mass surveillance often makes use of copyright laws and "user agreements" to obtain (typically uninformed) 'consent' to surveillance from consumers who use their software or other related materials. This allows gathering of information which would be technically illegal if performed by government agencies. This data is then often shared with government agencies - thereby - in practice - defeating the purpose of such privacy protections.

One of the most common forms of mass surveillance is carried out by commercial organizations. Many people are willing to join supermarket and grocery loyalty card programs, trading their personal information and surveillance of their shopping habits in exchange for a discount on their groceries, although base prices might be increased to encourage participation in the program.

Through programs like Google's AdSense, OpenSocial and their increasing pool of so-called "web gadgets", "social gadgets" and other Google-hosted services many web sites on the Internet are effectively feeding user information about sites visited by the users, and now also their social connections, to Google. Facebook also keep this information, although its acquisition is limited to page views within Facebook. This data is valuable for authorities, advertisers and others interested in profiling users, trends and web site marketing performance. Google, Facebook and others are increasingly becoming more guarded about this data as their reach increases and the data becomes more all inclusive, making it more valuable.

New features like geolocation give an even increased admission of monitoring capabilities to large service providers like Google, where they also are enabled to track one's physical movements while users are using mobile devices, especially those which are syncing without any user interaction. Google's Gmail service is increasingly employing features to work as a stand-alone application which also might activate while a web browser is not even active for synchronizing; a feature mentioned on the Google I/O 2009 developer conference while showing the upcoming HTML5 features which Google and others are actively defining and promoting.

In 2008 at the World Economic Forum in Davos, Google CEO Eric Schmidt, said: "The arrival of a truly mobile Web, offering a new generation of location-based advertising, is set to unleash a 'huge revolution'". At the Mobile World Congress in Barcelona on 16 February 2010, Google presented their vision of a new business model for mobile operators and trying to convince mobile operators to embrace location-based services and advertising. With Google as the advertising provider, it would mean that every mobile operator using their location-based advertising service would be revealing the location of their mobile customers to Google.
Google will also know more about the customer - because it benefits the customer to tell Google more about them. The more we know about the customer, the better the quality of searches, the better the quality of the apps. The operator one is "required", if you will, and the Google one will be optional. And today I would say, a minority choose to do that, but I think over time a majority will... because of the stored values in the servers and so forth and so on....
— 2010 Mobile World Congress keynote speech, Google CEO Eric Schmidt
Organizations like the Electronic Frontier Foundation are constantly informing users on the importance of privacy, and considerations about technologies like geolocation. 

Computer company Microsoft patented in 2011 a product distribution system with a camera or capture device that monitors the viewers that consume the product, allowing the provider to take "remedial action" if the actual viewers do not match the distribution license.

Reporters Without Borders' March 2013 Special report on Internet Surveillance contained a list of "Corporate Enemies of the Internet", companies that sell products that are liable to be used by governments to violate human rights and freedom of information. The five companies on the initial list were: Amesys (France), Blue Coat Systems (U.S.), Gamma Group (UK and Germany), Hacking Team (Italy), and Trovicor (Germany), but the list was not exhaustive and is likely to be expanded in the future.

Surveillance state

A surveillance state is a country where the government engages in pervasive surveillance of large numbers of its citizens and visitors. Such widespread surveillance is usually justified as being necessary for national security, such as to prevent crime or acts of terrorism, but may also be used to stifle criticism of and opposition to the government.

Germans protesting against the NSA surveillance program PRISM at Checkpoint Charlie in Berlin

Examples of early surveillance states include the former Soviet Union and the former East Germany, which had a large network of informers and an advanced technology base in computing and spy-camera technology. However, these states did not have today's technologies for mass surveillance, such as the use of databases and pattern recognition software to cross-correlate information obtained by wire tapping, including speech recognition and telecommunications traffic analysis, monitoring of financial transactions, automatic number plate recognition, the tracking of the position of mobile telephones, and facial recognition systems and the like which recognize people by their appearance, gait, DNA profiling, etc.

Smart cities

The development of smart cities has seen the increased adoption of surveillance technologies by governments, although the primary purpose of surveillance in such cities is to use information and communication technologies to improve the urban environment. The implementation of such technology by a number of cities has resulted in increased efficiencies in urban infrastructure as well as improved community participation. Sensors and systems monitor a smart city's infrastructure, operations and activities and aim to help it run more efficiently. For example, the city could use less electricity; its traffic run more smoothly with fewer delays; its citizens use the city with more safety; hazards can be dealt with faster; citizen infractions of rules can be prevented, and the city's infrastructure; power distribution and roads with traffic lights for example, dynamically adjusted to respond to differing circumstances.

The development of smart city technology has also led to an increase in potential unwarranted intrusions into privacy and restrictions upon autonomy. The widespread incorporation of information and communication technologies within the daily life of urban residents results in increases in the surveillance capacity of states - to the extent that individuals may be unaware of what information is being accessed, when the access occurs and for what purpose. It is possible that such conditions could give rise to the development of an electronic police state. Shanghai, Amsterdam, San Jose, Dubai, Barcelona, Madrid, Stockholm, and New York are all cities that use various techniques from smart city technology.

Electronic police state

Banner in Bangkok, observed on 30 June 2014 during the 2014 Thai coup d'Ć©tat, informing the Thai public that 'like' or 'share' activity on social media could land them in prison
 
An electronic police state is a state in which the government aggressively uses electronic technologies to record, collect, store, organize, analyze, search, and distribute information about its citizens. Electronic police states also engage in mass government surveillance of landline and cellular telephone traffic, mail, email, web surfing, Internet searches, radio, and other forms of electronic communication as well as widespread use of video surveillance. The information is usually collected in secret.

The crucial elements are not politically based, so long as the government can afford the technology and the populace will permit it to be used, an electronic police state can form. The continual use of electronic mass surveillance can result in constant low-level fear within the population, which can lead to self-censorship and exerts a powerful coercive force upon the populace.

Seventeen factors for judging the development of an electronic police state were suggested in The Electronic Police State: 2008 National Rankings:
  • Daily documents: Requirement for the use and tracking of state-issued identity documents and registration.
  • Border and travel control: Inspections at borders, searching computers and cell phones, demanding decryption of data, and tracking travel within as well as to and from a country.
  • Financial tracking: A state's ability to record and search financial transactions: checks, credit cards, wires, etc.
  • Gag orders: Restrictions on and criminal penalties for the disclosure of the existence of state surveillance programs.
  • Anti-crypto laws: Outlawing or restricting cryptography and/or privacy enhancing technologies.
  • Lack of constitutional protections: A lack of constitutional privacy protections or the routine overriding of such protections.
  • Data storage: The ability of the state to store the data gathered.
  • Data search: The ability to organize and search the data gathered.
  • Data retention requirements: Laws that require Internet and other service providers to save detailed records of their customers' Internet usage for a minimum period of time.
    • Telephone data retention requirements: Laws that require telephone companies to record and save records of their customers' telephone usage.
    • Cell phone data retention requirements: Laws that require cellular telephone companies to record and save records of their customers' usage and location.
  • Medical records: Government access to the records of medical service providers.
  • Enforcement: The state's ability to use force to seize anyone they want, whenever they want.
  • Lack of habeas corpus: Lack of a right for a person under arrest to be brought before a judge or into court in a timely fashion or the overriding of such rights.
  • Lack of a police-intel barrier: The lack of a barrier between police organizations and intelligence organizations, or the overriding of such barriers.
  • Covert hacking: State operatives collecting, removing, or adding digital evidence to/from private computers without permission or the knowledge of the computers' owners.
  • Loose or no warrants: Arrests or searches made without warrants or without careful examination and review of police statements and justifications by a truly independent judge or other third-party.
The list includes factors that apply to other forms of police states, such as the use of identity documents and police enforcement, but go considerably beyond them and emphasize the use of technology to gather and process the information collected.

In popular culture

The concept of being monitored by our government collects a large audience of curious citizens. Mass surveillance has been prominently featured in a wide array of books, films, and other media. Advances in technology over the last century have led to possible social control through the Internet and the conditions of late capitalism. Many directors and writers have been enthralled with the potential stories that could come from mass surveillance. Perhaps the most iconic example of fictional mass surveillance is George Orwell's 1949 novel Nineteen Eighty-Four, which depicts a dystopian surveillance state.

Here are a few other works that focus on mass surveillance:
  • We, a 1920 novel by Russian author Yevgeny Zamyatin , that predates Nineteen Eighty-Four and was read by its author George Orwell.
  • Little Brother is a novel by Cory Doctorow, and is set in San Francisco after a major terrorist attack. The DHS uses technologies such as RFIDs and surveillance cameras to create a totalitarian system of control.
  • The Lives of Others, is a 2006 German drama film, which movingly conveys the impact that relentless surveillance has on the emotional well-being and the outcome of individuals subjected to it.
  • The Hunger Games by Suzanne Collins is a trilogy in which 'the capital' has totalitarian surveillance & control over all aspects of the other 'districts'.
  • Digital Fortress, novel by Dan Brown, involving an NSA code breaking machine called 'TRANSLTR'. The machine read and decrypted email messages, with which the NSA used to foil terrorist attacks and mass murders.

Online machine learning

From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Online_machine_learning In computer sci...