Breach Signal
Every breach, on the record.
Consumer data breaches as they were reported: who was hit, how many people, what was taken, and how the attackers got in.
Records exposed on file
61.1B+
Updated August 31, 2026
Incidents
107
Consumer breaches reported
Sectors
20
From healthcare to gaming
Largest single
26B
Records in one incident
Years covered
19
2007 to 2026
Blast radius
The ten largest.
Ranked by records exposed. Bars are on a log scale; the figure is the count.
- 01Mother of All Breaches (MOAB)26B
- 0216 billion credential compilation16B
- 03Yahoo3B
- 04National Public Data (Jerico Pictures)2.9B
- 05Alibaba (Taobao)1.1B
- 06Aadhaar (Unique Identification Authority of India)1.1B
- 07Shanghai National Police Database1B
- 08Collection #1773M
- 09LinkedIn700M
- 10Dubsmash, MyHeritage, ShareThis and 13 other sites620M
The full wire
All 107 reports.
Filter by sector, search by name, or rank by size. Press / to search.
107 of 107
2026
7 reports- · HealthcareMcKessonHackers claim millions of patient records stolen during data breach at healthcare giant McKesson—
- · Travel & HospitalityBooking.comBooking.com confirms hackers accessed customers' data—
- · HealthcareConduentConduent data breach grows, affecting at least 25M people62.2M
- · TelecomOdidoDutch Carrier Odido Discloses Data Breach Impacting 6 Million6.2M
- · Social MediaMatch Group (Hinge, OkCupid, Match.com)Match Group breach exposes data from Hinge, Tinder, OkCupid, and Match10M
- · RetailUnder ArmourUnder Armour says it's 'aware' of data breach claims after 72M customer records were posted online72M
- · Social MediaInstagram (Meta)Instagram denies breach amid claims of 17 million account data leak17M
2025
22 reports- · Financial ServicesAflacMore than 22 million Aflac customers impacted by June data breach22.6M
- · MediaSoundCloudSoundCloud confirms breach after member data stolen, VPN access disrupted29.8M
- · RetailCoupangKorea's Coupang says data breach exposed nearly 34M customers' personal information33.7M
- · Financial ServicesProsper MarketplaceHave I Been Pwned: Prosper data breach impacts 17.6 million accounts17.6M
- · MessagingDiscordDiscord data breach affects at least 70,000 users70K
- · RetailKering (Gucci, Balenciaga, Alexander McQueen)Kering, owner of Gucci, Balenciaga, and other luxury brands, confirms hack7.4M
- · Credit BureauTransUnionTransUnion suffers data breach impacting over 4.4 million people4.4M
- · Social MediaTea (Tea Dating Advice)Dating safety app Tea breached, exposing 72,000 user images72K
- · Financial ServicesAllianz Life Insurance Company of North AmericaAllianz Life confirms data breach impacts majority of 1.4 million customers1.5M
- · RetailCo-op (Co-operative Group)UK retail giant Co-op confirms hackers stole all 6.5 million customer records6.5M
- · Food & RestaurantsMcDonald's (Paradox.ai McHire)'123456' password exposed chats for 64 million McDonald's job chatbot applications64M
- · Travel & HospitalityQantasQantas hack results in theft of 6 million passengers' personal data5.7M
- · Credential Compilation16 billion credential compilation16 Billion Apple, Facebook, Google And Other Passwords Leaked16B
- · HealthcareEpisource (Optum / UnitedHealth Group)Data Breach at Healthcare Services Firm Episource Impacts 5.4 Million People6.7M
- · RetailAdidasAdidas warns of data breach after customer service provider hack—
- · TelecomSK TelecomSK Telecom says malware breach lasted 3 years, impacted 27 million numbers26.9M
- · CryptoCoinbaseCoinbase says hackers bribed staff to steal customer data and are demanding $20 million ransom69.5K
- · RetailMarks & SpencerMarks & Spencer confirms customers' personal data was stolen in hack—
- · MessagingTeleMessage (Smarsh)TeleMessage, a modified Signal clone used by US government officials, has been hacked—
- · HealthcareYale New Haven HealthYale New Haven Health data breach affects 5.5 million patients5.6M
- · HealthcareChange Healthcare (UnitedHealth Group)UnitedHealth confirms 190 million Americans affected by Change Healthcare data breach190M
- · EducationPowerSchoolPowerSchool hacker claims they stole data of 62 million students71.9M
2024
11 reports- · HealthcareAscensionAscension: Health data of 5.6 million stolen in ransomware attack5.6M
- · RetailHot TopicHIBP notifies 57 million people of Hot Topic data breach56.9M
- · Data BrokerNational Public Data (Jerico Pictures)National Public Data confirms breach exposing Social Security numbers2.9B
- · Cloud & SaaSTrello (Atlassian)Email addresses of 15 million Trello users leaked on hacking forum15.1M
- · TelecomAT&TCrooks Steal Phone, SMS Records for Nearly All AT&T Customers110M
- · RetailNeiman MarcusNeiman Marcus data breach: 31 million email addresses found exposed31.2M
- · Ticketing & EntertainmentTicketmaster (Live Nation)Live Nation confirms Ticketmaster breach after hackers hawk stolen info of 560 million560M
- · Consumer TechDellDell warns of data breach, 49 million customers allegedly affected49M
- · HealthcareKaiser PermanenteKaiser's website tracking tools may have compromised data on 13 million customers13.4M
- · TelecomAT&TAT&T Says Data on 73 Million Customers Leaked on Dark Web73M
- · Credential CompilationMother of All Breaches (MOAB)Warning As 26 Billion Records Leak: Dropbox, LinkedIn, Twitter Named26B
2023
6 reports- · Genetics23andMe23andMe confirms hackers stole ancestry data on 6.9 million users6.9M
- · EducationDuolingoScraped data of 2.6 million Duolingo users released on hacking forum2.6M
- · HealthcareHCA HealthcareHCA Healthcare reports breach of 11 million patients' personal data11.3M
- · Financial ServicesLatitude FinancialLatitude Financial data breach now impacts 14 million customers14M
- · TelecomT-MobileT-Mobile says hacker accessed personal data of 37 million customers37M
- · Social MediaTwitter (X)200 million Twitter users' email addresses allegedly leaked online212M
2022
5 reports- · HealthcareMedibankRansomware gang threatens to publish thousands of Australians' health data9.7M
- · TelecomOptus (Singtel)Nearly 10 million Australians’ data possibly compromised in hack9.8M
- · Social MediaTwitter (X)Twitter confirms zero-day used to expose data of 5.4 million accounts5.4M
- · GovernmentShanghai National Police DatabaseData leak exposes China's vast surveillance state1B
- · Financial ServicesCash App (Block)Block confirms Cash App breach after former employee accessed US customer data8.2M
2021
8 reports- · Financial ServicesRobinhoodRobinhood discloses data breach impacting 7 million customers7M
- · GamingTwitch (Amazon)Twitch confirms hack after source code and creator payout data leaks online—
- · TelecomT-MobileT-Mobile says at least 47M current and former customers affected by hack76.6M
- · Social MediaLinkedInDetails On 700 Million LinkedIn Users For Sale On Notorious Hacking Forum700M
- · RetailAlibaba (Taobao)Alibaba Victim of Huge Data Leak as China Tightens Security1.1B
- · Social MediaFacebook (Meta)Phone numbers for 533 million Facebook users leaked on hacking forum533M
- · GovernmentBrazil CPF taxpayer database (multiple sources)Police arrest hacker suspected of biggest data leak in Brazil223M
- · Social MediaParlerScraped Parler data is a metadata gold mine—
2020
7 reports- · CryptoLedgerPhysical addresses of 270K Ledger owners leaked on hacker forum1.1M
- · Travel & HospitalityBritish AirwaysBritish Airways fined £20 million for data breach by ICO430K
- · MediaWattpadWattpad data breach exposes account info for millions of users270M
- · GamingNintendoNintendo's NNID hack was almost twice as big as first reported300K
- · Social MediaSina WeiboHacker selling data of 538 million Weibo users538M
- · Travel & HospitalityMGM ResortsDetails of 10 million MGM hotel guests leaked online10.7M
- · RetailWawaWawa Breach May Have Compromised More Than 30 Million Payment Cards30M
2019
5 reports- · GamingZyngaZynga data breach exposed 200 million Words with Friends players218M
- · Financial ServicesCapital OneCapital One Data Breach Affects 106 Million People, Suspect Arrested106M
- · Consumer TechCanvaAustralian tech unicorn Canva suffers security breach139M
- · Consumer TechDubsmash, MyHeritage, ShareThis and 13 other sites620 million accounts stolen from 16 hacked websites now for sale on dark web, seller boasts620M
- · Credential CompilationCollection #1773M Password 'Megabreach' is Years Old773M
2018
12 reports- · Social MediaQuora100 Million Quora Users Affected By 'Malicious' Data Breach100M
- · Travel & HospitalityMarriott International (Starwood)Marriott: Data on 500 Million Guests Stolen in 4-Year Breach383M
- · Travel & HospitalityCathay PacificCathay Pacific says 9.4M passenger records affected by data breach9.4M
- · Social MediaGoogle (Alphabet)Google Plus shutting down after security glitch exposes up to 500,000 users' data500K
- · Social MediaFacebook (Meta)Facebook Says Security Breach Affected Almost 50 Million Accounts29M
- · EducationCheggChegg resets 40 million user passwords after data breach40M
- · Data BrokerExactisA New Data Leak Reportedly Exposed 230 Million Americans' Personal Information340M
- · Social MediaFacebook (Meta) / Cambridge AnalyticaFacebook says the number of users affected by Cambridge Analytica data leak is 87 million87M
- · Social MediaGrindrGrindr Admits It Shared HIV Status Of Users—
- · Food & RestaurantsPanera BreadPanerabread.com Leaks Millions of Customer Records37M
- · Consumer TechUnder Armour (MyFitnessPal)Under Armour says data breach affected about 150 million MyFitnessPal accounts150M
- · GovernmentAadhaar (Unique Identification Authority of India)Rs 500, 10 minutes, and you have access to billion Aadhaar details1.1B
2017
5 reports- · Travel & HospitalityUberUber hid a hack that exposed data of 57 million users and drivers for more than a year57M
- · Consumer TechYahooEvery single Yahoo account was hacked - 3 billion in all3B
- · Credit BureauEquifaxGiant Equifax data breach: 143 million people could be affected148M
- · Social MediaInstagram (Meta)Hackers claim to have personal info of millions of Instagram accounts, including celebs6M
- · TelecomVerizonData of 14 Million Verizon Customers Exposed in Server Snafu14M
2016
7 reports- · Social MediaFriend Finder Networks (Adult FriendFinder)Adult FriendFinder hit with one of the biggest data breaches ever, report says412M
- · Consumer TechYahooYahoo says 500 million accounts stolen500M
- · Cloud & SaaSDropboxDropbox employee's password reuse led to theft of 60M+ user credentials68.6M
- · Social MediaVK (VKontakte)Another Day, Another Hack: 100 Million Accounts for VK, Russia's Facebook100M
- · Social MediaMyspaceRecently confirmed Myspace hack could be the largest yet360M
- · Social MediaTumblr (Yahoo)Hackers Stole 65 Million Passwords From Tumblr, New Analysis Reveals65.5M
- · Social MediaLinkedIn117 million LinkedIn emails and passwords from a 2012 hack just got posted online117M
2015
4 reports- · Credit BureauExperian (T-Mobile)Experian reports data breach; more than 15M T-Mobile customers affected15M
- · Social MediaAshley Madison (Avid Life Media)Online Cheating Site AshleyMadison Hacked37M
- · HealthcarePremera Blue CrossPremera Blue Cross Breach May Have Exposed 11 Million Customers' Medical And Financial Data11M
- · HealthcareAnthem (now Elevance Health)Health Insurance Provider Anthem Reports Massive Data Breach78.8M
2014
4 reports- · Financial ServicesJPMorgan ChaseJPMorgan Chase says hacking affected 76 million households83M
- · RetailHome DepotHome Depot: 56M Cards Impacted, Malware Contained56M
- · RetaileBayHackers raid eBay in historic breach, access 145M records145M
- · MessagingSnapchat (Snap Inc.)4.6 Million Snapchat Usernames And Phone Numbers Captured By API Exploit4.6M