List of data breaches

This is a list of data breaches, using data compiled from various sources, including press reports, government news releases, and mainstream news articles. The list includes those involving the theft or compromise of 30,000 or more records, although many smaller breaches occur continually. Breaches of large organizations where the number of records is still unknown are also listed. The various methods used in the breaches are also listed, with hacking being the most common.

For broader coverage of this topic, see Data breach.
This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries.

Most breaches occur in North America. It is estimated that the average cost of a data breach will be over $150 million by 2020, with the global annual cost forecast to be $2.1 trillion.[1][2] It is estimated that in first half of 2018 alone, about 4.5 billion records were exposed as a result of data breaches.[3] In 2019, a collection of 2.7 billion identity records, consisting of 774 million unique email addresses and 21 million unique passwords, was posted on the web for sale.[4]

EntityYear RecordsOrganization typeMethodSources
21st Century Oncology 2016 2,200,000 healthcare hacked [5][6]
500px2018 14,870,304social networkinghacked[7]
Accendo Insurance Co.2011 175,350healthcarepoor security[8][9]
Adobe Systems2013 152,000,000techhacked[10][11]
Adobe Inc. 2019 7,500,000 tech poor security [12]
Advocate Medical Group2013 4,000,000healthcarelost / stolen media[13][14]
AerServ (subsidiary of InMobi) 2018 75,000 advertising hacked [15]
Affinity Health Plan, Inc.2009 344,579healthcarelost / stolen media[16]
Air Canada 2018 20,000 transport hacked [17]
Amazon Japan G.K. 2019 unknown web accidentally published [18][19]
Ameritrade2005 200,000financiallost / stolen media[20]
Ancestry.com 2015 300,000 web poor security [21]
Ankle & Foot Center of Tampa Bay, Inc.2010 156,000healthcarehacked[22]
Anthem Inc.2015 80,000,000healthcarehacked[23][24]
AOL2004 92,000,000webinside job, hacked[25][26]
AOL2006 20,000,000webaccidentally published[27]
AOL2014 2,400,000webhacked[28]
Apple, Inc./BlueToad2012 12,367,232tech, retailaccidentally published[29]
Apple2013 275,000techhacked[30]
Apple Health Medicaid2016 91,000healthcarepoor security[31]
Ashley Madison2015 32,000,000webhacked[32]
AT&T2008 113,000telecomslost / stolen computer[33]
AT&T2010 114,000telecomshacked[34]
Auction.co.kr2008 18,000,000webhacked[35]
Australian Immigration Department2015 G20 world leadersgovernmentaccidentally published[36]
Automatic Data Processing2005 125,000financialpoor security[37]
AvMed, Inc.2009 1,220,000healthcarelost / stolen computer[38]
Bailey's Inc.2015 250,000retailhacked[39]
The Bank of New York Mellon2008 12,500,000financiallost / stolen media[40]
Bank of America 2005 1,200,000 financial lost / stolen media [41]
Barnes & Noble2012 63 storesretailhacked[42][43]
Bell Canada 2017 1,900,000 telecoms poor security [44]
Bell Canada 2018 100,000 telecoms hacked [45]
Betfair2010 2,300,000webhacked[33]
Bethesda Game Studios2011 200,000gaminghacked[46]
Bethesda Game Studios2018 gamingaccidentally published[47]
Betsson Group 2020 unknown gaming unknown [48]
Blank Media Games 2018 7,633,234 gaming hacked [49][50]
Blizzard Entertainment2012 14,000,000gaminghacked[51][52]
BlueCross BlueShield of Tennessee2009 1,023,209healthcarelost / stolen media[53]
BMO and Simplii2018 90,000bankingpoor security[54]
2018 British Airways cyberattack 2018 500,000 transport hacked [55][56][57]
British Airways2015 tens of thousandsretailhacked[58]
2019 Bulgarian revenue agency hack 2019 over 5,000,000 government hacked [59]
California Department of Child Support Services2012 800,000governmentlost / stolen media[33][60]
Canva 2019 140,000,000 web hacked [61][62][63]
Capital One 2019 106,000,000 financial unsecured S3 bucket [64][65]
CardSystems Solutions Inc.

(MasterCard, Visa, Discover Financial Services and American Express)

 2005 40,000,000financialhacked[66][67]
Cathay Pacific Airways 2018 9,400,000 transport hacked [68]
CareFirst BlueCross Blue Shield - Maryland2015 1,100,000healthcarehacked[69]
Central Coast Credit Union2016 60,000financialhacked[70]
Central Hudson Gas & Electric2013 110,000energyhacked[71]
CheckFree Corporation2009 5,000,000financialhacked[72]
CheckPeople2020 56,000,000background checkunknown[73]
China Software Developer Network2011 6,000,000webhacked[74]
Chinese gaming websites (three: Duowan, 7K7K, 178.com)2011 10,000,000webhacked[75]
Citigroup2005 3,900,000financiallost / stolen media[76]
Citigroup2011 360,083financialhacked[77]
Citigroup2013 150,000financialpoor security[78]
City and Hackney Teaching Primary Care Trust2007 160,000healthcarelost / stolen media[79]
Clearview AI2020 3,000,000,000
(Number of photos obtained)		information technologyhacked[80]
Colorado government2010 105,470healthcarelost / stolen computer[81]
Community Health Systems2014 4,500,000healthcarehacked[82]
Philippines Commission on Elections2016 55,000,000governmenthacked
Compass Bank2007 1,000,000financialinside job[33][83]
Countrywide Financial Corp2006 2,600,000financialinside job[33]
Countrywide Financial Corp2011 2,500,000financialinside job[84]
Centers for Medicare & Medicaid Services 2018 75,000 healthcare hacked [85]
Cox Communications2016 40,000telecomshacked[86]
Crescent Health Inc., Walgreens2013 100,000healthcarelost / stolen computer[71][87]
CVS2015 millionsretailhacked[88]
Dai Nippon Printing2007 8,637,405retailinside job[89]
Data Processors International
(MasterCard, Visa, Discover Financial Services and American Express)		2008 8,000,000financialhacked[90]
Defense Integrated Data Center (South Korea)2017 235 GBmilitaryhacked[91]
Deloitte 2017 350 clients emails consulting, accounting poor security [92][93]
Democratic National Committee2016 19,252political[94]
US Department of Homeland Security2016 30,000governmentpoor security[95][96]
Desjardins 2019 2,900,000 financial inside job [97]
Domino's Pizza (France)2014 600,000webhacked[98]
DoorDash2019 4,900,000webhacked[99]
UK Driving Standards Agency2007 3,000,000governmentlost / stolen media[100]
Dropbox2012 68,648,009webhacked[101]
Drupal2013 1,000,000webhacked[102]
DSW Inc. 2005 1,400,000 retail hacked [103]
Dubsmash2018 162 millionmessaging apphacked[104][105]
Dun & Bradstreet2013 1,000,000techhacked[106][107]
EasyJet2019-2020 9,000,000 (approx) - basic booking, 2208 (credit card details)transporthacked[108][109]
eBay2014 145,000,000webhacked[110]
Earl Enterprises
(Buca di Beppo, Earl of Sandwich, Planet Hollywood,
Chicken Guy, Mixology, Tequila Taqueria)		2018-2019 2,000,000restauranthacked[111]
Educational Credit Management Corporation2010 3,300,000financiallost / stolen media[112]
Eisenhower Medical Center2011 514,330healthcarelost / stolen computer[113]
ElasticSearch2019 108,000,000techpoor security[114]
Embassy Cables2010 251,000governmentinside job[115]
Emergency Healthcare Physicians, Ltd.2010 180,111healthcarelost / stolen media[113][116]
Emory Healthcare2012 315,000healthcarepoor security[113]
Equifax 2017 163,119,000 financial, credit reporting poor security [117][118]
European Central Bank2014 unknownfinancialhacked[119][120]
Evernote2013 50,000,000webhacked[121][122]
Exactis2018 340,000,000data brokerpoor security[123]
Excellus BlueCross BlueShield2015 10,000,000healthcarehacked[124]
Experian - T-Mobile US2015 15,000,000telecomshacked[125][126]
EyeWire2016 unknowntechlost / stolen computer[127]
Facebook2013 6,000,000social networkaccidentally published[128]
Facebook 2018 50,000,000 social network poor security [129][130][131][132][133][134]
Facebook 2019 540,000,000 social network poor security [135]
Facebook 2019 1,500,000 social network accidentally uploaded [136]
Facebook2019 267,000,000social networkpoor security[137][138]
Federal Reserve Bank of Cleveland2010 400,000financialhacked[33]
Fidelity National Information Services2007 8,500,000financialinside job[139]
First American Corporation 2019 885,000,000 financial service company poor security [140]
Florida Department of Juvenile Justice2013 100,000governmentlost / stolen computer[71]
Friend Finder Networks2016 412,214,295webpoor security / hacked[141][142]
Formspring2012 420,000webaccidentally published[143]
Gamigo2012 8,000,000webhacked[144]
Gap Inc.2007 800,000retaillost / stolen computer[145]
Gawker2010 1,500,000webhacked[146][147]
Global Payments2012 7,000,000financialhacked[148]
Gmail2014 5,000,000webhacked[149]
Google Plus 2018 500,000 social network poor security [150][151][152]
Greek government2012 9,000,000governmenthacked[153]
Grozio Chirurgija2017 25,000healthcarehacked[154][155][156]
GS Caltex2008 11,100,000energyinside job[157][158]
Gyft2016 unknownwebhacked[159][160]
Hannaford Brothers Supermarket Chain2007 4,200,000retailhacked[161]
HauteLook 2018 28,517,244 retail hacked [162][163][164]
Health Net2009 500,000healthcarelost / stolen media[165]
Health Net — IBM2011 1,900,000healthcarelost / stolen media[166]
Health Sciences Authority (Singapore) 2019 808,000 healthcare poor security [167]
Heartland2009 130,000,000financialhacked[168][169]
Heathrow Airport 2017 2.5GB transport lost / stolen media [170][171][172]
Hewlett Packard2006 200,000tech, retaillost / stolen media[173]
Hilton Hotels2014 and 2015 363,000hotelhacked[174][175]
Home Depot2014 56,000,000retailhacked[176]
Honda Canada2011 283,000retailpoor security[177]
Hyatt Hotels2015 250 locationshotelhacked[178][179]
Internal Revenue Service2015 720,000financialhacked[180][181]
Inuvik hospital2016 6,700healthcareinside job[182]
Iranian banks (three: Saderat, Eghtesad Novin, and Saman)2012 3,000,000financialhacked[183]
JailCore2020 36,000governmentpoor security[184]
Jefferson County, West Virginia2008 1,600,000governmentaccidentally published[33][185]
JP Morgan Chase2010 2,600,000financiallost / stolen media[186]
JP Morgan Chase2014 76,000,000financialhacked[187]
Justdial2019 100,000,000local searchunprotected api[188]
KDDI2006 4,000,000telecomshacked[189]
Kirkwood Community College2013 125,000academichacked[71][190]
KM.RU2016 1,500,000webhacked[191]
Koodo Mobile2020 unknownmobile carrierhacked[192]
Korea Credit Bureau2014 20,000,000financialinside job[193]
Kroll Background America2013 1,000,000techhacked[106][107]
KT Corporation2012 8,700,000telecomshacked[194][195]
LexisNexis2014 1,000,000techhacked[106][107]
Landry's, Inc.2015 500 locationsrestauranthacked[196][197]
LifeLabs2019 15,000,000healthcarehacked[198]
Lincoln Medical & Mental Health Center2010 130,495healthcarelost / stolen media[113][199]
LinkedIn, eHarmony, Last.fm2012 8,000,000webaccidentally published[200][201]
Living Social2013 50,000,000webhacked[202][203]
MacRumors.com2014 860,000webhacked[204]
Mandarin Oriental Hotels2014 10 locationshotelhacked[205][206]
Marriott International2018 500,000,000hotelhacked[207][208]
Marriott International2020 5,200,000hotelpoor security/inside job[209]
Massachusetts Government2011 210,000governmentpoor security[33]
Massive American business hack
including 7-Eleven and Nasdaq		2012 160,000,000financialhacked[210]
US Medicaid2012 780,000government, healthcarehacked[33]
Medical Informatics Engineering2015 3,900,000healthcarehacked[211]
Memorial Healthcare System2011 102,153healthcarelost / stolen media[212][113]
Michaels2014 3,000,000retailhacked[213]
Microsoft2019 250,000,000 tech data exposed by misconfiguration [214]
Militarysingles.com2012 163,792web, militaryaccidentally published[215]
Ministry of Education (Chile)2008 6,000,000governmentaccidentally published[216][217]
Ministry of Health (Singapore) 2019 14,200 healthcare poor security/inside job [218][219]
MongoDB2019 202,000,000techpoor security[220]
MongoDB2019 275,000,000techpoor security[221]
Mobile TeleSystems (MTS) 2019 100,000,000 telecommunications misconfiguration/poor security
Monster.com2007 1,600,000webhacked[222]
Morgan Stanley Smith Barney2011 34,000financiallost / stolen media[33]
Mozilla2014 76,000webpoor security[223]
MyHeritage 2018 92,283,889 genealogy unknown [224]
NASDAQ2014 unknownfinancialhacked[225]
Natural Grocers2015 93 storesretailhacked[226]
Neiman Marcus2014 1,100,000retailhacked[227][228]
Nemours Foundation2011 1,055,489healthcarelost / stolen media[113][229]
Network Solutions2009 573,000techhacked[230][231]
New York City Health & Hospitals Corp.2010 1,700,000healthcarelost / stolen media[113]
New York State Electric & Gas2012 1,800,000energyinside job[33]
New York Taxis2014 52,000transportpoor security[232]
Nexon Korea Corp2011 13,200,000webhacked[233]
NHS2011 8,300,000healthcarelost / stolen media[234]
Nintendo (Club Nintendo)2013 240,000gaminghacked[235]
Nintendo (Nintendo Account)2020 160,000gaminghacked[236]
Nival Networks2016 1,500,000gaminghacked[237]
Norwegian Tax Administration2008 3,950,000governmentaccidentally published[238]
Ofcom2016 unknowntelecominside job[239]
US Office of Personnel Management2015 21,500,000governmenthacked[240][241]
Office of the Texas Attorney General2012 6,500,000governmentaccidentally published[242]
Ohio State University2010 760,000academichacked[33]
Orbitz2018 880,000webhacked[243]
Oregon Department of Transportation2011 unknowngovernmentpoor security[33]
OVH2013 undisclosedwebhacked[244]
Patreon2015 2,300,000webhacked[245]
Popsugar2018 123,857fashionhacked[246]
Premera2015 11,000,000healthcarehacked[247]
Puerto Rico Department of Health2010 515,000healthcarehacked[113]
Quest Diagnostics 2019 11,900,000 Clinical Laboratory poor security [248]
Quora 2018 100,000,000 Question & Answer hacked [249]
Rambler.ru2012 98,167,935webhacked[250][251]
RBS Worldpay2008 1,500,000financialhacked[252]
Reddit 2018 unknown web hacked [253][254]
Restaurant Depot2011 200,000retailhacked[33]
RockYou!2009 32,000,000web, gaminghacked[255]
Rosen Hotels2016 unknownhotelhacked[256]
San Francisco Public Utilities Commission2011 180,000governmenthacked[257]
Scottrade2015 4,600,000financialhacked[258]
Scribd2013 500,000webhacked[259][260]
Seacoast Radiology, PA2010 231,400healthcarehacked[113][261]
Sega2011 1,290,755gaminghacked[262]
Service Personnel and Veterans Agency (UK)2008 50,500governmentlost / stolen media[263]
SingHealth 2018 1,500,000 government, database hacked [264]
Slack2015 500,000techpoor security[265]
SlickWraps2020 377,428phone accessoriespoor security[266]
SnapChat2013 4,700,000web, techhacked[267]
Sony Online Entertainment2011 24,600,000gaminghacked[268][269]
Sony Pictures2011 1,000,000webhacked[270]
Sony Pictures2014 100 terabytesmediahacked[271]
Sony PlayStation Network2011 77,000,000gaminghacked[272]
South Africa police2013 16,000governmenthacked[273]
South Carolina Government2012 6,400,000healthcareinside job[113][274]
South Shore Hospital, Massachusetts2010 800,000healthcarelost / stolen media[33]
Southern California Medical-Legal Consultants2011 300,000healthcarehacked[33]
Spartanburg Regional Healthcare System2011 400,000healthcarelost / stolen computer[113][275]
Stanford University2008 72,000academiclost / stolen computer[33][276]
Starbucks2008 97,000retaillost / stolen computer[33]
Starwood Hotels
including Westin Hotels and Sheraton Hotels		2015 54 locationshotelhacked[277][278]
State of Texas2011 3,500,000governmentaccidentally published[279]
Steam2011 35,000,000webhacked[280]
StockX2019 6,800,000retailhacked[281]
Stratfor2011 935,000militaryaccidentally published[282]
Supervalu2014 200 storesretailhacked[283]
Sutter Medical Center2011 4,243,434healthcarelost / stolen computer[113][284]
Syrian government (Syria Files)2012 2,434,899governmenthacked[285][286]
Taobao2016 20,000,000retailhacked[287]
Taringa! 2017 28,722,877 web hacked [288]
Target Corporation2013 110,000,000retailhacked[289][290]
TaxSlayer.com2016 8,800webhacked[291][292][293]
TD Ameritrade2007 6,300,000financialhacked[294]
TD Bank2012 260,000financialhacked[295][296]
TerraCom & YourTel2013 170,000telecomsaccidentally published[297][298]
Tetrad2020 120,000,000market analysispoor security[299]
Texas Lottery2007 89,000governmentinside job[33]
Ticketfly (subsidiary of Eventbrite) 2018 26,151,608 ticket distribution hacked [300]
Tianya Club2011 28,000,000webhacked[301]
TK / TJ Maxx2007 94,000,000retailhacked[302][303]
T-Mobile, Deutsche Telekom2006 17,000,000telecomslost / stolen media[304][305]
Tricare2011 4,901,432military, healthcarelost / stolen computer[33]
Triple-S Salud, Inc.2010 398,000healthcarelost / stolen media[113]
Truecaller2019 299,055,000Telephone directoryunknown[306][307]
Trump Hotels2014 8 locationshotelhacked[308][309]
Tumblr 2013 65,469,298 web hacked [310]
Twitch2015 unknowntechhacked[311]
Twitter2013 250,000webhacked[312]
Typeform 2018 unknown tech poor security [68]
Uber2014 50,000techpoor security[313]
Uber 2017 57,000,000 transport hacked [314]
Ubisoft2013 unknowngaminghacked[315]
Ubuntu2013 2,000,000techhacked[316]
UCLA Medical Center, Santa Monica2015 4,500,000healthcarehacked[317]
UK Home Office2008 84,000governmentlost / stolen media[318]
UK Ministry of Defence2008 1,700,000governmentlost / stolen media[319]
UK Revenue & Customs2007 25,000,000governmentlost / stolen media[320]
Universiti Teknologi MARA 2019 1,164,540 academic hacked [321]
Under Armour2018 150,000,000Consumer Goodshacked[322]
University of California, Berkeley2009 160,000academichacked[323]
University of California, Berkeley2016 80,000academichacked[324]
University of Maryland, College Park2014 300,000academichacked[325]
University of Central Florida2016 63,000academichacked[326]
University of Miami2008 2,100,000academiclost / stolen computer[33]
University of Utah Hospital & Clinics2008 2,200,000academiclost / stolen media[33]
University of Wisconsin–Milwaukee2011 73,000academichacked[33]
United States Postal Service2018 60,000,000governmentpoor security[327]
UPS2014 51 locationsretailhacked[328]
U.S. Army2011 50,000militaryaccidentally published[33]
U.S. Army
(classified Iraq War documents)		2010 392,000governmentinside job[329]
U.S. Department of Defense2009 72,000militarylost / stolen media[33]
U.S. Department of Veteran Affairs2006 26,500,000government, militarylost / stolen computer[330]
U.S. law enforcement (70 different agencies)2011 123,461governmentaccidentally published[331]
National Archives and Records Administration (U.S. military veterans records)2009 76,000,000militarylost / stolen media[332]
U.S. government (United States diplomatic cables leak)2010 260,000militaryinside job[333]
National Guard of the United States2009 131,000militarylost / stolen computer[33]
Verizon Communications2016 1,500,000telecomshacked[334]
Virgin Media2020 900,000mobile carrieraccidentally exposed[335][336]
Virginia Department of Health2009 8,257,378government, healthcarehacked[33]
Virginia Prescription Monitoring Program2009 531,400healthcarehacked[33]
Vodafone2013 2,000,000telecomsinside job[337]
VTech2015 5,000,000retailhacked[338]
Walmart2015 1,300,000retailhacked[88]
Washington Post2011 1,270,000mediahacked[339]
Washington State court system2013 160,000governmenthacked[340][341]
Wawa (company)2020 30,000,000retailhacked[342]
Weebly2016 43,430,316webhacked[343][344]
Wendy's2015 unknownrestauranthacked[345][346]
Woodruff Arts Center2019 unknownarts grouppoor security[347]
WordPress2018 hacked[348]
Writerspace.com2011 62,000webhacked[349]
Xat.com 2015 6,054,459 web social engineering [350]
Yahoo2013 3,000,000,000webhacked[351][352]
Yahoo2014 500,000,000webhacked[353][354][355][356][357]
Yahoo Japan2013 22,000,000tech, webhacked[358]
Yahoo! Voices2012 450,000webhacked[359][360]
Yale University2010 43,000academicaccidentally published[33]
Zappos2012 24,000,000webhacked[361]
Zynga2019 173,000,000social networkhacked[362][363]
Westpac2019 98,000financialhacked[364]
Australian National University2019 19 years of dataacademichacked[365]
Unknown agency
(believed to be tied to United States Census Bureau)		2020 200,000,000financialaccidentally published[366]

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