Timeline of Internet conflicts

The Internet has a long history of turbulent relations, major maliciously designed disruptions (such as wide scale computer virus incidents, DOS and DDOS attacks that cripple services, and organized attacks that cripple major online communities), and other conflicts. This is a list of known and documented Internet, Usenet, virtual community and World Wide Web related conflicts, and of conflicts that touch on both offline and online worlds with possibly wider reaching implications.

Spawned from the original ARPANET, the modern Internet, World Wide Web and other services on it, such as virtual communities ( bulletin boards, forums, and Massively multiplayer online games) have grown exponentially. Such prolific growth of population, mirroring "offline" society, contributes to the number of conflicts and problems online growing each year. Today, billions of people in nearly all countries use various parts of the Internet. Inevitably, as in "brick and mortar" or offline society, the virtual equivalent of major turning points, conflicts, and disruptions—the online equivalents of the falling of the Berlin Wall, the creation of the United Nations, spread of disease, and events like the Iraqi invasion of Kuwait will occur. Criteria for inclusion to this article may range from small-scale incidents such as online bomb threats to large scale cyberterrorism instances such as hacks of critical infrastructures.

Pre World Wide Web era

1980s

1980

* ARPANET grinds to a complete halt on October 27 because of an accidentally-propagated status-message virus.

1982

* The 414s compromise dozens of high-profile computer systems, including those at Los Alamos National Laboratory, Sloan-Kettering Cancer Center, and Security Pacific National Bank, between 1982 and 1983.

1985

* Kevin Mitnick was arrested by the FBI on February 15. Mitnick was convicted of wire fraud and of breaking into the computer systems of Fujitsu, Motorola, Nokia, and Sun Microsystems. He served five years in prison. His pursuit and subsequent arrest made him one of the most famous hackers up to that time.

1988

* A 23-year-old graduate student at Cornell University, Robert Tappan Morris, released the Internet's first worm, the Morris worm. Morris, the son of a National Security Agency (NSA) computer security expert, wrote 99 lines of code and released them as an experiment. The program began replicating and infecting machines at a much faster rate than he had anticipated, causing machines all over the world to crash.

1990

* In response to the US Secret Service's Operation Sundevil, Mitch Kapor establishes the Electronic Frontier Foundation to provide legal representation in cases involving the civil rights of computer users.

World Wide Web era

1990s

1991

* Phil Zimmermann creates and releases Pretty Good Privacy, an encryption tool still in use. By 1993, he was the target of U.S. government investigations, charged with "munitions export without a license". The investigation ended in 1996 with no charges filed.

1994

* An international group, dubbed the "Phonemasters" by the FBI, hacked into the networks of a number of companies including MCI WorldCom, Sprint, AT&T, and Equifax credit reporters. The gang accounted for approximately $1.85 million in business losses.
* In late 1995, Vladimir Levin persuaded Citibank's computers to transfer $10 million from its customers' accounts to his. Interpol arrested him at Heathrow Airport, and Citibank got most of the money back. He pleaded guilty in 1995, but the method he used wasn't uncovered for another ten years, and at that time was one of the largest computer crimes by dollar value.
*Laurence Canter and Martha Siegel post the first large commercial newsgroup spam, setting off an arms race between spammers and network operators.

1995

* Scientology and the Internet: After documents copyrighted by the Church of Scientology are posted to Usenet group alt.religion.scientology, church lawyers send threats of legal action to several users and attempt to shut down the group. Lawsuits are brought against users Dennis Erlich, Grady Ward, Arnaldo Lerma and Karin Spaink, but these fail to stem distribution of the documents.

1996

*Tim Lloyd plants a software time bomb at Omega Engineering, a company in New Jersey. The results of the attack are devastating: losses of US$12 million and more than 80 employees lose their jobs. Lloyd is sentenced to 41 months in jail.
*US President Bill Clinton signs the Communications Decency Act into US federal law as part of the Telecommunications Act of 1996. Web site operators turn their pages black in protest. The decency provisions are overturned the following year in ''Reno v. American Civil Liberties Union''.

1998

* The Digital Millennium Copyright Act (DMCA) becomes law in the United States.
* The CIH computer virus is released, written by Chen Ing Hau of Taiwan. It is considered to be one of the most harmful widely circulated viruses, overwriting critical information on infected system drives, and more importantly, in some cases corrupting the system BIOS, rendering computer systems unbootable. It was found in the wild in September.
* Two Chinese hackers, Hao Jinglong and Hao Jingwen (twin brothers), are sentenced to death by a court in China for breaking into a bank's computer network and stealing 720,000 yuan ($87,000).
* The US government allows the export of 56-bit encryption software, and stronger encryption software for highly sensitive data.
* The Electronic Disturbance Theater launches the Floodnet tool for civil disobedience, a tool to create a denial-of-service attack (DOS). The first DoS attacks were launched against the Pentagon, the Frankfurt Stock Exchange and the Mexican government.

1999

* From the time the Morris worm struck the Internet until the onset of the Melissa virus, the Internet was relatively free from swift-moving, highly destructive "malware". The Melissa virus, however, was rapacious; damages have been estimated at nearly $400 million. It marked a turning point, being the first incident of its kind to affect the newly commercial Internet.

2000s

2000

* The U.S. government establishes a technical review process to allow the export of encryption software regardless of key length.
* Discovering a demo of their song " I Disappear" on the Napster P2P file-sharing network, heavy metal band Metallica filed legal action against Napster over it (''Metallica v. Napster, Inc.''). This was the first time a major musical act publicly went against allegedly illegal file sharing.
* In February 2000, some of the Internet's most reliable sites were rendered nearly unreachable by distributed denial-of-service (DDoS) attacks. Yahoo! took the first hit on February 7, 2000. In the next few days, Buy.com, eBay, CNN, Amazon.com, ZDNet.com, E-Trade, and Excite were taken down by DDoS attacks. Though damage estimates vary widely, the FBI estimates that the companies suffered $1.7 billion USD in lost business and other damages.
* On May 5, 2000, the ILOVEYOU computer worm attacked tens of millions of Windows-based PCs. It started spreading as an email message with the subject line "ILOVEYOU" and the attachment "LOVE-LETTER-FOR-YOU.txt.vbs". The outbreak was estimated to have caused US$5.5–8.7 billion in damages worldwide, and estimated to cost the US$15 billion to remove the worm. The worm originated from the Philippines.

2001

* Dmitry Sklyarov is arrested by FBI agents while visiting the United States for having cracked encryption on Adobe Acrobat e-book software, in violation of the United States' DMCA. This occurred despite the fact that Russia, of which he is a citizen, does not honor this law as of 2001.

2002

* Google receives legal notices from the Church of Scientology and removes links to Operation Clambake from its search results.
* In October, a massive attack against the 13 root domain servers of the Internet is launched by unidentified hackers. The aim: to stop the domain name resolution service around the net.

2003

* Site Finder, the attempt by VeriSign in 2003 to take control of all unregistered .com and .net domain names for their own purposes, is launched, and just as quickly scuttled after massive public outcry and official protest from groups such as ARIN and IANA.

2004

* In November, Marvel Comics filed a lawsuit against the developers of the ''City of Heroes'' MMO, Cryptic Studios and their publisher NCsoft alleging that the game not only allows, but actively promotes, the creation of characters whose copyrights and trademarks are owned by Marvel, and that Cryptic has intentionally failed to police these infringing characters. The suit sought unspecified damages and an injunction to force the companies to stop making use of its characters. The case is settled and rejected by United States courts in December 2005 with no changes made to the game.

2005

* In May, the Wikipedia Seigenthaler biography incident began.
* In October, the Sony BMG copy protection rootkit scandal began, where it was discovered that Sony BMG surreptitiously and possibly illegally distributed copy protection software that forced itself to install on computers playing their audio CDs. As a result, many Windows-based computers belonging to consumers were left vulnerable to exploits and hacking.
* In November, it was revealed that the online video game '' World of Warcraft'', with millions of subscribers, would be hackable due to the far-reaching corruption and invasiveness of Sony's copy protection scheme.
* On December 20, the ''City of Heroes'' game servers were nearly all hacked by an undisclosed method. According to NCsoft representative CuppaJo, "Customer data and its security was not compromised in any way during the incident that occurred," and no additional information beyond this was publicly disclosed. As of July 2006, this is the first known hack of any MMO, of which there are millions of subscribers across numerous games.

2006

* In January 2006, the Electronic Frontier Foundation lodged a class action lawsuit ('' Hepting v. AT&T'') which alleged that AT&T had allowed agents of the National Security Agency to monitor phone and Internet communications of AT&T customers without warrants. In April 2006 a retired former AT&T technician, Mark Klein, lodged an affidavit supporting this allegation. The Department of Justice has stated they will intervene in this lawsuit by means of State Secrets Privilege. The existence of this database and the NSA program that compiled it was mostly unknown to the general public until '' USA Today'' broke the story on May 10, 2006. It is estimated that the database contains over 1.9 trillion call-detail records of phone calls made after September 11 attacks.
* On May 3, a massive DDOS assault on Blue Security, an anti-spam company, is redirected by Blue Security staff to their Movable Type-hosted blog. The result is that the DDOS instead knocks out all access to over 1.8 million active blogs, including all ten million plus registered LiveJournal accounts (which is owned by Movable Type's parent company).
*The Motion Picture Association of America (MPAA) in May was accused of hiring illegal hackers to fight BitTorrent technology.
* In June, The Pirate Bay, a BitTorrent tracker website based in and operating from Sweden, is raided by Swedish police for allegedly violating United States, Swedish, and European Union copyright law. As of November 2006, the site remains online, operating from Denmark and no legal action has been filed against it or its owners. (The site is online now at thepiratebay.org)

2007

* May 17: Estonia recovers from massive denial-of-service attack
* June 13: FBI Operation Bot Roast finds over 1 million botnet victims
* June 21: A spear phishing incident at the Office of the Secretary of Defense steals sensitive U.S. defense information, leading to significant changes in identity and message-source verification at OSD.

* August 11: United Nations website hacked by Indian Hacker Pankaj Kumar Singh.
*November 14: Panda Burning Incense, which is known by several other names, including Fujacks and Radoppan.T lead to the arrest of eight people in China. Panda Burning Incense was a parasitic virus that infected executable files on a PC. When infected, the icon of the executable file changes to an image of a panda holding three sticks of incense. The arrests were the first for virus writing in China.

2008

* January 17: Project Chanology; Anonymous attacks Scientology website servers around the world. Private documents are stolen from Scientology computers and distributed over the Internet.
* March 7: Around 20 Chinese hackers claim to have gained access to the world's most sensitive sites, including the Pentagon. They operated from an apartment on a Chinese Island.
* March 14: Trend Micro website successfully hacked by Turkish hacker Janizary (aka Utku).

2009

* April 4: Conficker worm infiltrated millions of PCs worldwide, including many government-level top-security computer networks.

2010s

2010

* June: Stuxnet The Stuxnet worm is found by VirusBlokAda. Stuxnet was unusual in that while it spread via Windows computers, its payload targeted just one specific model and type of SCADA systems. It slowly became clear that it was a cyberattack on Iran's nuclear facilities—with most experts believing that Israel was behind it—perhaps with US help.

2011

* The hacker group Lulz Security is formed.
* April 9: Bank of America website got hacked by a Turkish hacker named JeOPaRDY. An estimated 85,000 credit card numbers and accounts were reported to have been stolen due to the hack. Bank officials say no personal customer bank information is available on that web-page. Investigations are being conducted by the FBI to trace down the incriminated hacker.
* April 17: An " external intrusion" sends the PlayStation Network offline, and compromises personally identifying information (possibly including credit card details) of its 77 million accounts, in what is claimed to be one of the five largest data breaches ever.
* Computer hacker sl1nk releases information of his penetration in the servers of the Department of Defense (DoD), Pentagon, NASA, NSA, US Military, Department of the Navy, Space and Naval Warfare System Command and other UK/US government websites.
* September: Bangladeshi hacker TiGER-M@TE made a world record in defacement history by hacking 700,000 websites in a single shot.
* October 16: The YouTube channel of '' Sesame Street'' was hacked, streaming pornographic content for about 22 minutes.
* November 1: The main phone and Internet networks of the Palestinian territories sustained a hacker attack from multiple locations worldwide.
* November 7: The forums for Valve's Steam service were hacked. Redirects for a hacking website, Fkn0wned, appeared on the Steam users' forums, offering "hacking tutorials and tools, porn, free giveaways and much more."
* December 14: Five members of the Norwegian hacker group, Noria, were arrested, allegedly suspected of hacking into the email account of the militant extremist Anders Behring Breivik (who perpetrated the 2011 attacks in the country).

2012

* A hacker, Big-Smoke, published over 400,000 credit cards online, and threatened Israel to release 1 million credit cards in the future. In response to that incident, an Israeli hacker published over 200 Albanian' credit cards online.
* Gottfrid Svartholm Warg, the co-founder of Pirate Bay, was convicted in Denmark of hacking a mainframe computer, what was then Denmark's biggest hacking case.
*January 7: "Team Appunity", a group of Norwegian hackers, were arrested for breaking into Norway's largest prostitution website, then publishing the user database online.
*February 3: Marriott was hacked by a New Age ideologist, Attila Nemeth, who was resisting against the New World Order where he said that corporations are allegedly controlling the world. As a response, Marriott reported him to the United States Secret Service.
*February 8: Foxconn is hacked by a hacker group, "Swagg Security", releasing a massive amount of data including email and server logins, and even more alarming—bank account credentials of large companies like Apple and Microsoft. Swagg Security stages the attack just as a Foxconn protest ignites against terrible working conditions in southern China.
*May 4: The websites of several Turkish representative offices of international IT-companies are defaced within the same day by F0RTYS3V3N (Turkish Hacker), including the websites of Google, Yandex, Microsoft, Gmail, MSN, Hotmail, PayPal.
*May 24: WHMCS is hacked by UGNazi, they claim that the reason for this is because of the illegal sites that are using their software.
*May 31: MyBB is hacked by newly founded hacker group, UGNazi, the website was defaced for about a day, they claim their reasoning for this was because they were upset that the forum board Hackforums.net uses their software.
*June 5: The social networking website LinkedIn has been hacked and the passwords for nearly 6.5 million user accounts are stolen by cybercriminals. As a result, a United States grand jury indicted Nikulin and three unnamed co-conspirators on charges of aggravated identity theft and computer intrusion.
*August 15: The most valuable company in the world Saudi Aramco is crippled by a cyber warfare attack for months by malware called Shamoon. Considered the biggest hack in history in terms of cost and destructiveness . Carried out by an Iranian attacker group called Cutting Sword of Justice. Iranian hackers retaliated against Stuxnet by releasing Shamoon. The malware destroyed over 35,000 Saudi Aramco computers, affecting business operations for months.
*December 17: Computer hacker sl1nk announced that he has hacked a total of 9 countries' SCADA systems. The proof includes 6 countries: France, Norway, Russia, Spain, Sweden and the United States.

2013

* The social networking website Tumblr is attacked by hackers. Consequently, 65,469,298 unique emails and passwords were leaked from Tumblr. The data breach's legitimacy is confirmed by computer security researcher Troy Hunt.
* August: Yahoo! data breaches occurred. More than 1 billion users' data is being leaked.

2014

* February 7: The bitcoin exchange Mt. Gox filed for bankruptcy after $460million was apparently stolen by hackers due to "weaknesses in heirsystem" and another $27.4million went missing from its bank accounts.
* August: The Gamergate harassment campaign erupts over the inclusion of women in video game industry.
* October: The White House computer system was hacked. It was said that the FBI, the Secret Service, and other U.S. intelligence agencies categorized the attacks "among the most sophisticated attacks ever launched against U.S. government systems."
* November 24: In response to the release of the film ''The Interview'', the servers of Sony Pictures are hacked by a hacker group calling itself "Guardian of Peace".
* November 28: The website of the Philippine telecommunications company Globe Telecom was hacked in response to the poor internet service they are distributing.

2015

* June: the records of 21.5 million people, including social security numbers, dates of birth, addresses, fingerprints, and security clearance-related information, are stolen from the United States Office of Personnel Management (OPM). Most of the victims are employees of the United States government and unsuccessful applicants to it. '' The Wall Street Journal'' and '' The Washington Post'' report that government sources believe the hacker is the government of China.
*July: The servers of extramarital affairs website Ashley Madison were breached.

2016

* February: The 2016 Bangladesh Bank heist attempted to steal US$951 million from a Bangladesh Bank, and succeeded in getting $101 million—although some of this was later recovered.
* March: '' VICE'' reported that a teenage hacker Cyber Anakin had gone on a hacking spree against Russian websites such as e-mail provider KM.RU and game company Nival to express his anger against Russia for the downing of the Malaysia Airlines Flight MH17 in eastern Ukraine. According to cybersecurity researcher Troy Hunt, at least 1.5 million victims were affected by the breaches. Many years later Latvia-based independent news website Meduza used the content of KM.RU's data breach to pinpoint the identity of a person who has been harassing female chess players of various countries such as Russia, Kazakhstan and India with the delivery of mails containing used condoms.
* July 22: WikiLeaks published the documents from the 2016 Democratic National Committee email leak.
* July 29: a group suspected coming from China launched hacker attacks on the website of Vietnam Airlines.
* August 13: The Shadow Brokers (TSB) started publishing several leaks containing hacking tools from the National Security Agency (NSA), including several zero-day exploits. Ongoing leaks until April 2017 (The Shadow Brokers)
* September: Hacker Ardit Ferizi is sentenced to 20 years in prison after being arrested for hacking U.S. servers and passing the leaked information to members of ISIL terrorist group back in 2015.
* October: The 2016 Dyn cyberattack is being conducted with a botnet consisting of IOTs infected with Mirai by the hacktivist groups SpainSquad, Anonymous, and New World Hackers, reportedly in retaliation for Ecuador's rescinding Internet access to WikiLeaks founder Julian Assange at their embassy in London, where he has been granted asylum.
*Late 2016: Hackers steal international personal user data from the company Uber, including phone numbers, email addresses, and names, of 57 million people and 600,000 driver's license numbers of drivers for the company. Uber's GitHub account was accessed through Amazon's cloud-based service. Uber paid the hackers $100,000 for assurances the data was destroyed.
* December 2016: Yahoo! data breaches reported and affected more than 1 billion users. The data leakage includes user names, email addresses, telephone numbers, encrypted or unencrypted security questions and answers, dates of birth, and hashed passwords

2017

* April: A hacker group calling itself "The Dark Overlord" posted unreleased episodes of ''Orange Is the New Black'' TV series online after failing to extort the online entertainment company Netflix.
* May: WannaCry ransomware attack started on Friday, May 12, 2017, and has been described as unprecedented in scale, infecting more than 230,000 computers in over 150 countries. A hacked unreleased Disney film is held for ransom, to be paid in Bitcoin.
* May: 25,000 digital photos and ID scans relating to patients of the Grozio Chirurgija cosmetic surgery clinic in Lithuania were obtained and published without consent by an unknown group demanding ransoms. Thousands of clients from more than 60 countries were affected. The breach brought attention to weaknesses in Lithuania's information security.
*June: 2017 Petya cyberattack.
*June: TRITON (TRISIS), a malware framework designed to reprogram Triconex safety instrumented systems (SIS) of industrial control systems (ICS), discovered in Saudi Arabian Petrochemical plant.
*August: Hackers demand $7.5 million in Bitcoin to stop pre-releasing HBO shows and scripts, including '' Ballers'', '' Room 104'' and ''Game of Thrones''.
* May–July 2017: The Equifax breach.
* September 2017: Deloitte breach.
*December: Mecklenburg County, North Carolina computer systems were hacked. They did not pay the ransom.

2018

* March: Computer systems in the city of Atlanta, in the U.S. state of Georgia, are seized by hackers with ransomware. They did not pay the ransom, and two Iranians were indicted by the FBI on cyber crime charges for the breach.
* The town of Wasaga Beach in Ontario, Canada computer systems are seized by hackers with ransomware.
*September: Facebook was hacked, exposing to hackers the personal information of an estimated 30 million Facebook users (initially estimated at 50 million) when the hackers "stole" the "access tokens" of 400,000 Facebook users. The information accessible to the hackers included users' email addresses, phone numbers, their lists of friends, Groups they are members of, users' search information, posts on their timelines, and names of recent Messenger conversations."Facebook Was Hacked. 3 Things You Should Do After the Breach. The social networking giant said attackers had exploited a weakness that enabled them to hijack the accounts of nearly 50 million users. Here are some tips for securing your account,"
September 28, 2018, New York Times, retrieved April 15, 2021"Facebook says hackers accessed phone numbers, email addresses as part of latest breach,"
October 12, 2018, Fox News, retrieved April 15, 2021
*October: West Haven, Connecticut USA computer systems are seized by hackers with ransomware, they paid $2,000 in ransom.
*November:
**The first U.S. indictment of individual people for ransomware attacks occurs. The U.S. Justice Department indicted two men Faramarz Shahi Savandi and Mohammad Mehdi Shah Mansouri who allegedly used the SamSam ransomware for extortion, netting them more than $6 million in ransom payments. The companies infected with the ransomware included Allscripts, Medstar Health, and Hollywood Presbyterian Medical Center. Altogether, the attacks caused victims to lose more than $30 million, in addition to the ransom payments.
**Marriott disclosed that its Starwood Hotel brand had been subject to a security breach.

2019

*March: An online bomb threat was posted against Axel Voss' office in Bonn reportedly due to his support of Directive on Copyright in the Digital Single Market.
*March: Jackson County computer systems in the U.S. state of Georgia are seized by hackers with ransomware, they paid $400,000 in ransom. The city of Albany in the U.S. state of New York experiences a ransomware cyber attack.
*April: Computer systems in the city of Augusta, in the U.S. state of Maine, are seized by hackers using ransomware. The City of Greenville (North Carolina)'s computer systems are seized by hackers using ransomware known as RobbinHood. Imperial County, in the U.S. state of California, computer systems are seized by hackers using Ryuk ransomware.
* May: computer systems belonging to the City of Baltimore are seized by hackers using ransomware known as RobbinHood that encrypts files with a "file-locking" virus, as well as the tool EternalBlue.
*June: The city of Riviera Beach, Florida paid roughly $600,000 ransom in Bitcoin to hackers who seized their computers using ransomware. Hackers stole 18 hours of unreleased music from the band Radiohead demanding $150,000 ransom. Radiohead released the music to the public anyway and did not pay the ransom.
*November: The Anonymous hacktivist collective announced that they have hacked into four Chinese computer databases and donated those to data breach indexing/notification service vigilante.pw. The hack was conducted in order to support the 2019 Hong Kong protests, amidst the Hong Kong police's siege of the city's Polytechnic University. They also brought up a possible peace plan first proposed by a professor at Inha University in hopes of having the Korean reunification and the five key demands of the Hong Kong protest being fulfilled at once.

2020s

2020

* February: Anonymous hacked the United Nations website and created a page for Taiwan, a country which had not had a seat at the UN since 1971. The hacked page featured the Flag of Taiwan, the KMT emblem, a Taiwan Independence flag, the Anonymous logo, embedded YouTube videos such as the Taiwanese national anthem and the closing score for the 2019 film '' Avengers: Endgame'' titled " It's Been a Long, Long Time", and a caption. The hacked server belonged to the United Nations Department of Economic and Social Affairs.
* March: A Malaysian railway station was mentioned on a Twitter post as part of a warning issued via a hacked account by a group of entities with the names of "黎晓培", "Coltsfan", "biowolfjp", "CM Ang" and "chi.keat". On the website and Reddit they also claimed responsibility of allegedly contaminating the headquarters of United Malays National Organisation and Malaysian Islamic Party with the COVID-19 virus. As a result, the local mass transit company Rapid KL had reported it to the police.
* March: Locations including Ostankino Tower, a station in St Petersburg Metro and at least one Aeroflot flight were subjected to alleged bio-terrorist attacks by a group of entities including those with names of "Thomas Little Evil Utoyo", "Calton", "David Law", "Thanthom", "Hendy", "Gideon W", "Audentis", "Mister Eriee O", "Khengwin", "T-Zehang", "曾家顺", "Mr Castaigne", "kkkwan", "ronxi", "KC LING", "Le3p0ryuen", "Jayrulo", "S Teoh", "Ian Chew", "Mr Yiliang", "W. somboonsuk", "S Patcharaphon", "Victor pang", "jiangxin", "文_祥!", "Freddyisf0xy", "Masami", "Greg Galloway", "EncoreOngKai", "Alteredd State", "Jon@th@nlangdale" and "Dig Dejected" who had posted about it on the hacked University of Georgia's Grady Newsource website, the web page of US National Association of Women Business Owners (NAWBO), a Council of Europe's Twitter account and that of Temple University's which they've taken over. They further said that they would target the RKA Mission Control Center at a later time and additionally claimed that "Elmo Chong" and "Krully" had contaminated the Twitter headquarters in San Francisco, United States.
* May: Anonymous declared a large hack on May 28, three days after the murder of George Floyd. An individual claiming to represent Anonymous stated that "We are Legion. We do not forgive. We do not forget. Expect us." in a now-deleted video. Anonymous addressed police brutality and said they "will be exposing heirmany crimes to the world". It was suspected that Anonymous were the cause for the downtime and public suspension of the Minneapolis Police Department website and its parent site, the website of the City of Minneapolis.
* May: Indian national Shubham Upadhyay posed as Superintendent of Police and, using social engineering, used a free caller identification app to call up the in-charge of the Kotwali police station, K. K. Gupta, in order to threaten him to get his phone repaired amidst the COVID-19 lockdown. The attempt was foiled.
* June: Anonymous claimed responsibility for stealing and leaking a trove of documents, collectively nicknamed ' BlueLeaks'. The 269-gigabytes collection was published by a leak-focused activist group known as Distributed Denial of Secrets. Furthermore, the collective took down Atlanta Police Department's website via DDoS, and defaced websites such as a Filipino governmental webpage and that of Brookhaven National Labs. They expressed support for Julian Assange and press freedom, while briefly "taking a swing" against Facebook, Reddit and Wikipedia for having 'engaged in shady practices behind our prying eyes'. In the case of Reddit, they posted a link to a court document describing the possible involvement of a moderator of a large traffic subreddit (/r/news) in an online harassment-related case.
* June: The Buffalo, NY police department's website was supposedly hacked by Anonymous. While the website was up and running after a few minutes, Anonymous tweeted again on Twitter urging that it be taken down. A few minutes later, the Buffalo, NY website was brought down again. They also hacked Chicago police radios to play N.W.A's " Fuck tha Police".
* June: Over 1,000 accounts on the multiplayer online game Roblox were hacked to display that they supported U.S. President Donald Trump.
* July: The 2020 Twitter bitcoin scam occurred.
* July: User credentials of writing website Wattpad were stolen and leaked on a hacker forum. The database contained over 200 million records.
* August: A large number of sub reddits were hacked to post materials endorsing Donald Trump. The affected subreddits included r/BlackPeopleTwitter, r/3amJokes, r/NFL, r/PhotoshopBattles. An entity with the name of "calvin goh and Melvern" had purportedly claimed responsibility for the massive defacement, and also made violent threats against a Chinese embassy.
* August: The US Air Force's Hack-A-Sat event was hosted at DEF CON's virtual conference where groups such as Poland Can Into Space, FluxRepeatRocket, AddVulcan, Samurai, Solar Wine, PFS, 15 Fitty Tree, and 1064CBread competed in order to control a satellite in space. The Poland Can Into Space team stood out for having successfully manipulated a satellite to take a picture of the Moon.
* August: The website of Belarusian company "BrestTorgTeknika" was defaced by a hacker nicknaming herself " Queen Elsa", in order to support the 2020–21 Belarusian protests. In it, the page hacker exclaimed "Get Iced Iced already" and "Free Belarus, revolution of our times" with the latter alluding to the famous slogan used by 2019 Hong Kong protests. The results of the hack were then announced on Reddit's /r/Belarus subreddit by a poster under the username "Socookre".
* August: Multiple DDoS attacks forced New Zealand's stock market to temporarily shut down.
* September: The first suspected death from a cyberattack was reported after cybercriminals hit a hospital in Düsseldorf, Germany with ransomware.
* October: A wave of botnet-coordinated ransomware attacks against hospital infrastructure occurred in the United States, identified as . State security officials and American corporate security officers were concerned that these attacks might be a prelude to hacking of election infrastructure during the elections of the subsequent month, like similar incidents during the 2016 United States elections and other attacks; there was, however, no evidence that they performed attacks on election infrastructure in 2020.
* December: A supply chain attack targeting upstream dependencies from Texas IT service provider "SolarWinds" results in serious, wide-ranging security breaches at the U.S. Treasury and Commerce departments. White House officials did not immediately publicly identify a culprit; Reuters, citing sources "familiar with the investigation", pointed toward the Russian government. An official statement shared by Senate Finance Committee ranking member, Ron Wyden said: "Hackers broke into systems in the Departmental Offices division of Treasury, home to the department’s highest-ranking officials."
* December: A bomb threat posted from a Twitter account that was seemingly hacked by persons with the aliases of "Omnipotent" and "choonkeat", against the Aeroflot Flight 102, a passenger flight with the plane tail number of VQ-BIL coming from Moscow to New York City. Due to that, a runway of New York's John F. Kennedy International Airport was temporarily closed and resulted in the delay of Aeroflot Flight 103, a return flight back to Moscow.
* December: The Anonymous group initiated 'Christmas gift' defacements against multiple Russian portals, including a municipal website in Tomsk and that of a regional football club. Inside the defacements, they made multiple references such as Russian opposition activist Alexei Navalny, freedom protests in Thailand and Belarus, and opposition to the Chinese Communist Party. They also held a mock award based on an event on the game platform Roblox that was called "RB Battles" where YouTubers Tanqr and KreekCraft, the winner and the runner-up of the actual game event, were compared to both Taiwan and New Zealand respectively due to the latter's reportedly stellar performance in fighting the COVID-19 pandemic.

2021

* January: Microsoft Exchange Server data breach
* February: Anonymous announced cyber-attacks of at least five Malaysian websites. As a result, eleven individuals were nabbed as suspects.
* February: Hackers including those with names of "张卫能 utoyo" and "full_discl0sure" hijacked an events website ''Aucklife'' in order to craft a phony bomb threat against the Chinese consulate in Auckland, New Zealand, and also a similar facility in Sydney, Australia. Their motive was a punitive response against China due to COVID-19. As a result, a physical search was conducted at the consulate by New Zealand's Police Specialist Search Group, while Aucklife owner Hailey Newton had since regained her access to the website. Wellington-based cybersecurity consultant Adam Boileau remarked that the hack isn't 'highly technical'.
* February: The group "Myanmar Hackers" attacked several websites belonging to Myanmar government agencies, such as the Central Bank of Myanmar and the military-run '' Tatmadaw True News Information Team''. The group also targeted the Directorate of Investment and Company Administration, Trade Department, Customs Department, Ministry of Commerce, Myawady TV and state-owned broadcaster Myanmar Radio and Television and some private media outlets. A computer technician in Yangon found that the hacks were denial-of-service attacks, while the group's motive is to protest the 2021 Myanmar coup.
* April: Over 500 million Facebook users' personal info—including info on 32 million in the United States—was discovered posted on a hackers' website, though Facebook claimed that the information was from a 2019 hack, and that the company had already taken mitigation measures; however, the company declined to say whether it had notified the affected users of the breach."Cybersecurity: Millions of Facebook accounts hacked,"
April 5, 2021, KTNV-TV, Las Vegas, Nevada, retrieved April 15, 2021"Facebook hack How to find out if you were one of the 533 million Facebook users hacked,"
Fox5 TV, San Diego, California, retrieved April 15, 2021"2021-04-13 Facebook data breach explained: How the world’s largest social media platform got hacked,"
April 13, 2021, '' Times of India,'' retrieved April 15, 2021
* April: The Ivanti Pulse Connect Secure data breach of unauthorized access to the networks of high-value targets since at least June 2020 via across the U.S. and some E.U. nations due to their use of vulnerable, proprietary