Difference between revisions of "Internet Censorship in South Korea"

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'''Internet Censorship in South Korea''' is known to be fairly restrictive since it censors any type of pro-North Korea materials online and actively regulates the production / distribution of pornography. Due to these reasons, it represents Republic of Korea's (a.k.a. South Korea) unique traits of Internet environment. While freedom of expression is guaranteed like any other developed countries in the world, certain aspects are still considered to be conservative or oppressed. There is a clear contradiction between democratic values of the country and level of government censorship <ref name="Korea Communications Committee">“South Korea and Internet Censorship” University of Washington, November. 2017, https://jsis.washington.edu/news/south-korea-internet-censorship/</ref>.  
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'''Internet Censorship in South Korea''' is fairly restrictive since it censors any type of pro-North Korean material online and actively regulates the production/distribution of pornography. Due to these reasons, [https://en.wikipedia.org/wiki/South_Korea South Korea]'s (Republic of Korea) unique traits can be seen represented in its Internet environment. While freedom of expression online is guaranteed in South Korea, like many other developed countries in the world, certain aspects are still considered to be conservative or oppressed. There is a clear contradiction between democratic values of the country and level of government censorship <ref name="Korea Communications Committee">“South Korea and Internet Censorship” University of Washington, November. 2017, https://jsis.washington.edu/news/south-korea-internet-censorship/</ref>.
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As of 2012, the [https://en.wikipedia.org/wiki/OpenNet_Initiative OpenNet Initiative] has ranked South Korea's internet censorship in the sector of security/conflict as "pervasive filtering" due to the censorship of pro-North Korean content. In terms of social content, the level of filtering was deemed "selective, and in the sector of political and internet tools, no evidence of filtering was found. Other factors, such as transparency and consistency, were ranked as "high"<ref>“South Korea.” South Korea | OpenNet Initiative, opennet.net/research/profiles/south-korea.</ref>.
  
 
[[File:Southkoreafree.png|520px|thumb|right]]
 
[[File:Southkoreafree.png|520px|thumb|right]]
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== Basic censorship ==
 
== Basic censorship ==
 
=== Politics ===
 
=== Politics ===
Since 1948, Republic of Korea had the National Security Act (NSA)<ref name="political censorship">“Internet Laws: South Korea” lawless.tech, 15 Nov. 2018, https://lawless.tech/internet-laws-south-korea/ Political Censorship</ref> that can imprison those who show empathy or favoritism for pro-North Korean materials. This was based on the fact that the government of Republic of Korea was established under the ideology of liberalism in 1948, which strongly opposed to what North Koreans were pursuing: communism. The 1990 Act on Exchanges and Collaboration<ref name="political censorship">“Internet Laws: South Korea” lawless.tech, 15 Nov. 2018, https://lawless.tech/internet-laws-south-korea/ Political Censorship</ref> depicts that citizens of R.O.K. should report to the government if there were any type of interaction with North Koreans or was in contact of materials that were somehow related to them. This was an enforced action made by the government in order to secure South Koreans from the spread of massive amount of communism ideology by North Korea. Information and Communications Network Act (ICNA)<ref name="political censorship">“Internet Laws: South Korea” lawless.tech, 15 Nov. 2018, https://lawless.tech/internet-laws-south-korea/ Political Censorship</ref> also acts as a barrier in the Internet environment by promoting website hosts to censor illegal or problematic materials as soon as they detect them. In addition, Information and Communications Network Act (ICNA) significantly contributed in founding legislative bills that protect politicians and effectively censor people who started to produce and distribute fake information about politicians while presidential election<ref name="ICNA">“Amendment of the ICNA and the Korean Government’s plan to expand restrictions on the use and collection of resident registration numbers” LEXOLOGY, July. 2012, https://www.lexology.com/library/detail.aspx?g=94a8ed9d-31b4-4eda-8763-3053730fa511</ref>. Legal protection is provided in the court to those who conformed to this law, whenever there is a dispute about posting inappropriate contents online.
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Since 1948, the Republic of Korea has actively exercised the National Security Act (NSA)<ref name="political censorship">“Internet Laws: South Korea” lawless.tech, 15 Nov. 2018, https://lawless.tech/internet-laws-south-korea/ Political Censorship</ref>, which states that those who show empathy or favoritism for pro-North Korean materials can be criminally prosecuted. This is based on the fact that the government of South Korea is established under the ideology of liberalism; an ideology strongly opposed to communism, which is the fundamental basis of the North Korean government infrastructure. The 1990 Act on Exchanges and Collaboration<ref name="political censorship">“Internet Laws: South Korea” lawless.tech, 15 Nov. 2018, https://lawless.tech/internet-laws-south-korea/ Political Censorship</ref> depicts that citizens of South Korea should report to the government should they interact in any way with North Korean citizens or come in contact with materials related to them on any level. This act was passed by the government in an effort to hinder South Koreans from the spreading North Korean communist ideologies. The Information and Communications Network Act (ICNA)<ref name="political censorship">“Internet Laws: South Korea” lawless.tech, 15 Nov. 2018, https://lawless.tech/internet-laws-south-korea/ Political Censorship</ref> also acts as a barrier in the realm of the Internet by promoting website hosts to censor illegal or problematic materials as soon as they detect them. In addition, the Information and Communications Network Act (ICNA) made a significant contribution towards founding legislative bills protecting politicians, as well as effectively censoring people who produce and distribute fake information about politicians during a presidential election<ref name="ICNA">“Amendment of the ICNA and the Korean Government’s plan to expand restrictions on the use and collection of resident registration numbers” LEXOLOGY, July. 2012, https://www.lexology.com/library/detail.aspx?g=94a8ed9d-31b4-4eda-8763-3053730fa511</ref>. In cases where there is a dispute regarding whether a content online is inappropriate, legal protection is provided in court to those conforming to this law.
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[[File:Woori.jpg|300px|thumb|right|Website of Woori-minjok-kkiri - North Korean Propaganda]]
 
[[File:Woori.jpg|300px|thumb|right|Website of Woori-minjok-kkiri - North Korean Propaganda]]
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=== Discussion about North Korean Websites ===
 
=== Discussion about North Korean Websites ===
South Korea has been actively blocking websites that are either pro-North Korea or those that are directly hosted by the North Korean government. Since the advent of Internet technology, the North Korean government has been continuously putting effort to propagandize their ideology by publishing articles and announcements made in their country. As a result, the South Korean cyber security police effectively censored / discovered 43 pro-North Korean websites in 2004. Considering the fact that most of the North Korean websites that promote propaganda and other related information have their host servers outside the country, the South Korean cyber security police tracked down the IP addresses which North Korean developers use. After investigation, the websites - Joseon Inforbank, Korea Book Center, Choseon Travel, Woori-minjok-kkiri (meaning: getting together between our race), Silli Bank (silli meaning benefits), Choseon Lottery Cooperation, Jupesite, Goryeo Baduk (Baduk is Korean checkers), Joseon Stamps, and Joseon Publishing - were found that they were based in Japan host servers. <ref name="North Korean Websites Based In Japan">“Police Announce 43 Active Pro-North Korean Websites” THE DONG-A ILBO, 8 September. 2004, http://english.donga.com/List/3/all/26/237073/1</ref>. Joseon Tongsin (Tongsin means correspondence) and Guk-jeonseon (meaning channels between nations) in Japan, Unification Arirang (Arirang is a traditional Korean folk song) in China, Minjok Tongsin (Minjok means race) in the U.S., and Korea Network were websites that had their hosts in other foreign countries <ref name="North Korean Websites Based In Japan">“Police Announce 43 Active Pro-North Korean Websites” THE DONG-A ILBO, 8 September. 2004, http://english.donga.com/List/3/all/26/237073/1</ref>.
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South Korea actively blocks websites that are either pro-North Korean or directly hosted by the North Korean government. Since the advent of Internet technology, the North Korean government has been continuously putting an effort into propagandizing their ideology by publishing articles and announcements made in their country. As of 2004, the South Korean cybersecurity police had effectively discovered and censored 43 pro-North Korean websites. An investigation was also launched to track down IP addresses which North Korean developers were using to host propaganda websites, which found that most host servers were outside the country, with an especially high number of offending servers in Japan. Some of the websites hosted in Japan that were discovered by the South Korean cybersecurity police force include Joseon Infobank, Korea Book Center, Choseon Travel, Woori-minjok-kkiri (meaning "within our peoples"), [https://en.wikipedia.org/wiki/Sili_Bank Sili Bank], Choseon Lottery Cooperation, Jupesite, Goryeo Baduk (Baduk is Korean version of the board game checkers), Joseon Stamps, and [https://en.wikipedia.org/wiki/Choson_Sinbo Joseon Sinbo], Joseon Tongsin (Tongsin meaning correspondence), and Gukjeonseon (meaning channels between nations). Servers found in other foreign countries include Unification Arirang in China, Minjok Tongsin in the United States, and Korea Network<ref name="North Korean Websites Based In Japan">“Police Announce 43 Active Pro-North Korean Websites” THE DONG-A ILBO, 8 September. 2004, http://english.donga.com/List/3/all/26/237073/1</ref>.
  
  
 
=== Pornography ===
 
=== Pornography ===
Republic of Korea has been actively censoring pornography since the early 1980s when political censorship started to pick up speed. Republic of Korea defines pornography as any type of material that may contain homosexual, asexual concepts including child pornography. When Internet technology was not widely provided, the government enthusiastically censored those materials by confiscating seditious books or banning adult video production. As Internet technology flourished, regulations have changed in forms of banning websites that contained keywords government set, such as porn, child, gay, and lesbian<ref name="Pornography">“South Korea crusades against online pornography” LEXOLOGY, July. 2012, https://www.usatoday.com/story/news/world/2012/12/10/south-korea-porn/1758277/</ref>. In the early 2000s, the government adopted a new technology that censored pornography websites by tracking http host servers. Once pornography or inappropriate contents where detected from a website, http censorship quickly identified where the host server was and provided information to the cyber security police.
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South Korea actively censors pornography and has been since the early 1980s when political censorship began to pick up speed. Prior to the ubiquitination of Internet technology, the South Korean government enthusiastically censored materials containing pornography by confiscating seditious books or banning adult video production. In modern times, regulations have changed to banning websites containing keywords that the government has set, including "porn", "child porn", "gay", and "lesbian"<ref name="Pornography">“South Korea crusades against online pornography” LEXOLOGY, July. 2012, https://www.usatoday.com/story/news/world/2012/12/10/south-korea-porn/1758277/</ref>. Since the early 2000s, the South Korean government has adopted a method of pornography censorship utilizing the tracking of HTTP host servers. Upon detecting pornography or other inappropriate content on a website, the information about the host server is quickly forwarded to the cybersecurity police through HTTP filtering.
 
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Internet in South Korea also has age verified search terms. Age verification happens when you search a keyword that would be inappropriate for minors. When a keyword is dedicated the user than has to enter their national identity number verifying that they are old enough to continue the search. For non korean citizens a copy of the passport has to be entered to continue. <ref>Schwartz, Barry., "Searching For An Adult Topic? You’ll Have To Prove Your Age To Google Korea" May 17, 2007</ref>
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The South Korean government also exercises an age verification system in search engines, which is triggered upon searching a keyword that is blacklisted as inappropriate for minors. In order to view mature content, Internet users in South Korea must enter their national identity number verifying their age, whereas non-citizens must enter passport information<ref>Schwartz, Barry., "Searching For An Adult Topic? You’ll Have To Prove Your Age To Google Korea" May 17, 2007</ref>.
  
 
===Korea Communications Commission===
 
===Korea Communications Commission===
The Korea Communications Commission, KCC, was created in February of 2008 and it works to regulate all media in Korea. The Korea Communications Standards Commission, KCSC, replaced the Information and Communication Ethics Committee. This committee works within the KCC to regulate the Internet specifically. One of the main aspects of the KCSC is that it required the citizens of Korea to enter an identification number that has been issued by the government in order to post political comments online. There has been a lot of criticism against the KCSC because people do not think that it is ethical that their social media networks and personal mobile apps can be monitored and watched. The KCC and the KCSC work closely together as the KCC identifies and monitors content and then if something must be taken down, the KCSC takes care of that. In addition to the KCC and the KCSC is the Korean Internet Self-Governance Organization, KISO. The KISO is not run by the government, but it still works closely with the KCC and KCSC. Since the KISO works closely with the government committees of KCC and KCSC, they cooperate and use a method called "Real Name Verification." Real Name Verification requires online users to provide a certain amount of personal information in order to be allowed to post information online. The KISO works specifically with the largest Internet providers in Korea - Naver, DaumKakao, SK Communications, and KT <ref name="Korea Communications Committee">“South Korea and Internet Censorship” University of Washington, November. 2017, https://jsis.washington.edu/news/south-korea-internet-censorship/</ref>.
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The [https://en.wikipedia.org/wiki/Korea_Communications_Commission Korea Communications Commission] (KCC), was created in February of 2008 and works to regulate all media in Korea. Around this time, the [https://en.wikipedia.org/wiki/Korea_Communications_Standards_Commission Korea Communications Standards Commission] (KCSC), replaced the Information and Communication Ethics Committee. The KCSC works within the KCC to regulate specifically the Internet. The KCC and the KCSC work closely together as the KCC identifies and monitors inappropriate content and the KCSC consequently takes it down. The Korean Internet Self-Governance Organization, KISO is another organization involved in media monitoring and censorship. While the KISO is not run by the government, it still works closely with the KCC and KCSC, collectively using a method coined "Real Name Verification" to coerce Internet users to give up a certain amount of personal information in order to be able to post information online. The KISO works specifically with the largest Internet providers in Korea - Naver, DaumKakao, SK Communications, and KT <ref name="Korea Communications Committee">“South Korea and Internet Censorship” University of Washington, November. 2017, https://jsis.washington.edu/news/south-korea-internet-censorship/</ref>.
  
== SNI filtering ==
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A noteworthy rule that the KCSC implemented is the requirement of citizens of South Korea to enter their identification number issued by the government in order to post political comments online. Following this, the KSCS was barraged with heavy criticism from citizens, who argued the unethicality of having their social media networks and personal mobile apps monitored.  
Recently, in February 2019, the Korean government announced that they will reinforce their Internet censorship by adopting a new technology called SNI filtering. The purpose of this act is to enhance cyber network security levels by censoring materials that are classified as 'inappropriate' - very subjective - and to protect citizens from exposure to any type of fraud or hacking.  
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== SNI filtering ==
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Recently, in February 2019, the Korean government announced that they will reinforce their Internet censorship by adopting a new technology called [https://en.wikipedia.org/wiki/Server_Name_Indication SNI] filtering. This act was passed with the intent to enhance cyber network security levels by censoring materials classified as 'inappropriate' and protect citizens from fraud or hacking.
  
 
=== Mechanism ===
 
=== Mechanism ===

Revision as of 17:18, 14 April 2019

Internet Censorship in South Korea is fairly restrictive since it censors any type of pro-North Korean material online and actively regulates the production/distribution of pornography. Due to these reasons, South Korea's (Republic of Korea) unique traits can be seen represented in its Internet environment. While freedom of expression online is guaranteed in South Korea, like many other developed countries in the world, certain aspects are still considered to be conservative or oppressed. There is a clear contradiction between democratic values of the country and level of government censorship [1].

As of 2012, the OpenNet Initiative has ranked South Korea's internet censorship in the sector of security/conflict as "pervasive filtering" due to the censorship of pro-North Korean content. In terms of social content, the level of filtering was deemed "selective, and in the sector of political and internet tools, no evidence of filtering was found. Other factors, such as transparency and consistency, were ranked as "high"[2].

Southkoreafree.png

Basic censorship

Politics

Since 1948, the Republic of Korea has actively exercised the National Security Act (NSA)[3], which states that those who show empathy or favoritism for pro-North Korean materials can be criminally prosecuted. This is based on the fact that the government of South Korea is established under the ideology of liberalism; an ideology strongly opposed to communism, which is the fundamental basis of the North Korean government infrastructure. The 1990 Act on Exchanges and Collaboration[3] depicts that citizens of South Korea should report to the government should they interact in any way with North Korean citizens or come in contact with materials related to them on any level. This act was passed by the government in an effort to hinder South Koreans from the spreading North Korean communist ideologies. The Information and Communications Network Act (ICNA)[3] also acts as a barrier in the realm of the Internet by promoting website hosts to censor illegal or problematic materials as soon as they detect them. In addition, the Information and Communications Network Act (ICNA) made a significant contribution towards founding legislative bills protecting politicians, as well as effectively censoring people who produce and distribute fake information about politicians during a presidential election[4]. In cases where there is a dispute regarding whether a content online is inappropriate, legal protection is provided in court to those conforming to this law.


Website of Woori-minjok-kkiri - North Korean Propaganda


Discussion about North Korean Websites

South Korea actively blocks websites that are either pro-North Korean or directly hosted by the North Korean government. Since the advent of Internet technology, the North Korean government has been continuously putting an effort into propagandizing their ideology by publishing articles and announcements made in their country. As of 2004, the South Korean cybersecurity police had effectively discovered and censored 43 pro-North Korean websites. An investigation was also launched to track down IP addresses which North Korean developers were using to host propaganda websites, which found that most host servers were outside the country, with an especially high number of offending servers in Japan. Some of the websites hosted in Japan that were discovered by the South Korean cybersecurity police force include Joseon Infobank, Korea Book Center, Choseon Travel, Woori-minjok-kkiri (meaning "within our peoples"), Sili Bank, Choseon Lottery Cooperation, Jupesite, Goryeo Baduk (Baduk is Korean version of the board game checkers), Joseon Stamps, and Joseon Sinbo, Joseon Tongsin (Tongsin meaning correspondence), and Gukjeonseon (meaning channels between nations). Servers found in other foreign countries include Unification Arirang in China, Minjok Tongsin in the United States, and Korea Network[5].


Pornography

South Korea actively censors pornography and has been since the early 1980s when political censorship began to pick up speed. Prior to the ubiquitination of Internet technology, the South Korean government enthusiastically censored materials containing pornography by confiscating seditious books or banning adult video production. In modern times, regulations have changed to banning websites containing keywords that the government has set, including "porn", "child porn", "gay", and "lesbian"[6]. Since the early 2000s, the South Korean government has adopted a method of pornography censorship utilizing the tracking of HTTP host servers. Upon detecting pornography or other inappropriate content on a website, the information about the host server is quickly forwarded to the cybersecurity police through HTTP filtering.

The South Korean government also exercises an age verification system in search engines, which is triggered upon searching a keyword that is blacklisted as inappropriate for minors. In order to view mature content, Internet users in South Korea must enter their national identity number verifying their age, whereas non-citizens must enter passport information[7].

Korea Communications Commission

The Korea Communications Commission (KCC), was created in February of 2008 and works to regulate all media in Korea. Around this time, the Korea Communications Standards Commission (KCSC), replaced the Information and Communication Ethics Committee. The KCSC works within the KCC to regulate specifically the Internet. The KCC and the KCSC work closely together as the KCC identifies and monitors inappropriate content and the KCSC consequently takes it down. The Korean Internet Self-Governance Organization, KISO is another organization involved in media monitoring and censorship. While the KISO is not run by the government, it still works closely with the KCC and KCSC, collectively using a method coined "Real Name Verification" to coerce Internet users to give up a certain amount of personal information in order to be able to post information online. The KISO works specifically with the largest Internet providers in Korea - Naver, DaumKakao, SK Communications, and KT [1].

A noteworthy rule that the KCSC implemented is the requirement of citizens of South Korea to enter their identification number issued by the government in order to post political comments online. Following this, the KSCS was barraged with heavy criticism from citizens, who argued the unethicality of having their social media networks and personal mobile apps monitored.

SNI filtering

Recently, in February 2019, the Korean government announced that they will reinforce their Internet censorship by adopting a new technology called SNI filtering. This act was passed with the intent to enhance cyber network security levels by censoring materials classified as 'inappropriate' and protect citizens from fraud or hacking.

Mechanism

SNI filtering (Server Name Indication)[8] is a new technology that is based on tracking https websites. 10 years ago, website addresses all started with http://, where http stands for Hypertext Transfer Protocol[9]. Hypertext Transfer Protocol is a technology that precedes the actual presentation of assigned webpage. Once a user requests data, HTTP technology is applied prior to loading. The "protocol" you made in order to call data from the server, is governed by this http technology first, and then sends back the information you requested. As numerous activities became available in the Internet, professionals felt the necessity to effectively secure sensitive data such as credit card numbers, social security numbers, personal medical records, etc. And that is when the https technology was developed - the extra S stands for secured, where all of your selected sensitive data is encrypted whenever the protocol is requested and sent to the host server[9]. That way, not only people could protect invaders from hacking sensitive information, but also prevented random leaks that contained unexpected, raw data. Now, SNI filtering technology enforces the surveillance - it only allows connection to websites that are enrolled in the certificate. If the server is not certified by the government, SNI filtering will 'filter out' those inappropriate information and automatically send you to a alternate website that warns the user.


Technical Challenge

Although Server Name Indication technology seems like a beauty overall, considering its power in ensuring cyber-security, there still is a challenge for Sever Name Indication faces. The SNI technology is only applicable to legacy browsers or operating systems and well-known ones among them are Google Chrome, Firefox, Mozilla, Safari, which most of the people use in the world in their daily lives. This, however, means that those who do not use these type of legacy browsers are incompatible with this technology and are vulnerable to highly developed cyber attacks. Common non-legacy browsers currently used are Internet Explorer (a.k.a. the IE) on Windows XP (or older), Android 2.3 version or older. It is known these browsers may result in a cyber-fallacy during the certifying process, known as the handshaking, and end up with a common name mismatch error. A solution for this issue is to use a multi-domain TLS as a default certificate in order to avoid the name mismatch error since it lists all the domains when the IP addresses are shared [10].


Ethical Issues

Concerns about no privacy


Surveillance and Voyeurism by government

Newly adopted technology in South Korea - Server Name Indication filtering - is apparently hosted and conducted by the South Korean government. Users in South Korea will inevitably be restricted their range of freedom whether it is politics or pornography. But the technology itself has a backdoor which allows the host, or to make it more easy to understand, the boss to gain access to sensitive information. The host is able to read 1) where the protocol was made and 2) where the protocol is headed to. The location of where the protocol is headed to means, what users are looking up for. This technically infers continuous surveillance, and in this case the South Korean government is the one who is watching all of the users. On top of that, there is no way for the general public to figure out whether your searching history is being kept eyes on or might not even know that they are actually being watched until they learn this information. From a wider point of view, it can be a perfect surveillance which completely counters cyber ethics. The Internet environment was known to be a free space with anonymity, privacy and no surveillance but with this new censorship policy, users are in stake of turning into a bunch of fish in a fishbowl kept in guard. There is not problem and no one really puts attention to fish that 'behave' in the fishbowl, but once it makes 'trouble', the boss outside immediately catches them - the bowl is transparent. Same thing is applied to SNI technology in South Korea - users will not know until the voyeur gains intention and acts upon them (Doyle, T., 2009. Privacy and Perfect Voyeurism. Ethics Inf Technol, 11, 181–189). As Doyle argued, perfect voyeurism cannot be justified in any case even though there was no bad voyeur's preference or intentional spying on the victim because the voyeur is already violating the victim's right to privacy which is intrinsically wrong.


Invasion of privacy

SNI filtering technology was meant to be programmed in such a way that it only polices inappropriate websites. But the problem with using SNI filtering technology is that it gives too much authority to the person who is in control. The essence of this technology is that the programmer can obtain information about what kind of information users are trying to reach out to[11]. The technology does not precisely track down every single step of access, but it does give data about keywords that were browsed or at least attempted to be used[12]. The Korean government acknowledged the concerns that professionals raised and announced that they will not be using in such a way where every single person is censored of what they are doing. People in South Korea are very concerned they will lose their freedom of expression, which seemed to be well preserved for at least the last 20 years, and show anxiety of being watched all the time by the government. One citizen illustrated this situation as a disaster by comparing to the People's Republic of China, where the government actively censors materials that are posted in the Internet and banning global search engines such as Google and Youtube.


See Also For Comparison and Reference

References

  1. 1.0 1.1 “South Korea and Internet Censorship” University of Washington, November. 2017, https://jsis.washington.edu/news/south-korea-internet-censorship/
  2. “South Korea.” South Korea | OpenNet Initiative, opennet.net/research/profiles/south-korea.
  3. 3.0 3.1 3.2 “Internet Laws: South Korea” lawless.tech, 15 Nov. 2018, https://lawless.tech/internet-laws-south-korea/ Political Censorship
  4. “Amendment of the ICNA and the Korean Government’s plan to expand restrictions on the use and collection of resident registration numbers” LEXOLOGY, July. 2012, https://www.lexology.com/library/detail.aspx?g=94a8ed9d-31b4-4eda-8763-3053730fa511
  5. “Police Announce 43 Active Pro-North Korean Websites” THE DONG-A ILBO, 8 September. 2004, http://english.donga.com/List/3/all/26/237073/1
  6. “South Korea crusades against online pornography” LEXOLOGY, July. 2012, https://www.usatoday.com/story/news/world/2012/12/10/south-korea-porn/1758277/
  7. Schwartz, Barry., "Searching For An Adult Topic? You’ll Have To Prove Your Age To Google Korea" May 17, 2007
  8. “Server Name Indication” https://en.wikipedia.org/wiki/Server_Name_Indication
  9. 9.0 9.1 “Is South Korea Sliding Toward Digital Dictatorship?” Forbes, 25 Feb. 2012, https://www.forbes.com/sites/davidvolodzko/2019/02/25/is-south-korea-sliding-toward-digital-dictatorship/#abab472648e2
  10. “What is Server Name Indication (SNI)?” Globalsign, 1 June. 2018, https://www.globalsign.com/en/blog/what-is-server-name-indication/
  11. “South Korea Expands Site Blocking Efforts with SNI Eavesdropping” TorrentFreak, 14 Feb. 2019, https://torrentfreak.com/south-korea-expands-site-blocking-efforts-with-sni-eavesdropping-190214/
  12. “South Korea is Censoring the Internet by Snooping on SNI Traffic” BleepingComputer, 13 Feb. 2019, https://www.bleepingcomputer.com/news/security/south-korea-is-censoring-the-internet-by-snooping-on-sni-traffic/