Editing Computer security (section)

===Office of Personnel Management data breach===
In April 2015, the [[United States Office of Personnel Management|Office of Personnel Management]] [[Office of Personnel Management data breach|discovered it had been hacked]] more than a year earlier in a data breach, resulting in the theft of approximately 21.5&nbsp;million personnel records handled by the office.<ref>{{Cite news|url=https://www.reuters.com/article/us-cybersecurity-usa-idUSKCN0PJ2M420150709|title=Millions more Americans hit by government personnel data hack|date=9 July 2017|newspaper=Reuters|access-date=25 February 2017|url-status=live|archive-url=https://web.archive.org/web/20170228005352/http://www.reuters.com/article/us-cybersecurity-usa-idUSKCN0PJ2M420150709|archive-date=28 February 2017}}</ref> The Office of Personnel Management hack has been described by federal officials as among the largest breaches of government data in the history of the United States.<ref>{{cite news|url=https://www.wsj.com/articles/u-s-suspects-hackers-in-china-behind-government-data-breach-sources-say-1433451888|title=U.S. Suspects Hackers in China Breached About four (4) Million People's Records, Officials Say|last=Barrett|first=Devlin|website=The Wall Street Journal|date=4 June 2015|url-status=live|archive-url=https://web.archive.org/web/20150604215718/http://www.wsj.com/articles/u-s-suspects-hackers-in-china-behind-government-data-breach-sources-say-1433451888|archive-date=4 June 2015}}</ref> Data targeted in the breach included [[personally identifiable information]] such as [[Social Security number]]s, names, dates and places of birth, addresses, and fingerprints of current and former government employees as well as anyone who had undergone a government background check.<ref>{{cite web|url=https://www.usnews.com/news/articles/2015/06/05/china-suspected-in-theft-of-federal-employee-records|title=China Suspected in Theft of Federal Employee Records|last=Risen|first=Tom|date=5 June 2015|website=U.S. News & World Report|archive-url=https://web.archive.org/web/20150606064331/http://www.usnews.com/news/articles/2015/06/05/china-suspected-in-theft-of-federal-employee-records|archive-date=6 June 2015}}</ref><ref>{{cite news|url=https://www.reuters.com/article/us-cybersecurity-usa-idUSKCN0PJ2M420150709|title=Estimate of Americans hit by government personnel data hack skyrockets|last=Zengerle|first=Patricia|date=19 July 2015|newspaper=Reuters|url-status=live|archive-url=https://web.archive.org/web/20150710075449/http://www.reuters.com/article/2015/07/09/us-cybersecurity-usa-idUSKCN0PJ2M420150709|archive-date=10 July 2015}}</ref> It is believed the hack was perpetrated by Chinese hackers.<ref>{{cite news|url=https://www.nytimes.com/2015/06/05/us/breach-in-a-federal-computer-system-exposes-personnel-data.html|title=Hacking Linked to China Exposes Millions of U.S. Workers|last=Sanger|first=David|date=5 June 2015|work=The New York Times|url-status=live|archive-url=https://web.archive.org/web/20150605135158/http://www.nytimes.com/2015/06/05/us/breach-in-a-federal-computer-system-exposes-personnel-data.html|archive-date=5 June 2015}}</ref>