Data breach list: recent and past breaches

Every known data breach, from the latest to the biggest: what leaked and what to do.

Breaches
13,115
AccountsBreached accounts
14+ billion
Health
1+ billion
Updated
Monthly statistics: the Serus Data Breach Report, September 2026

How often do people try to get their data removed? See our research.

Notable recent breaches

Latest edition

Data breaches in September 2026

146 breaches · 48.9M people affected · 35.7M accounts leaked

All breaches

Breach Date Affected Source
Synthient Credential Stuffing Threat Data Apr 2025 · 2B affected Apr 2025 2B View breach
Collection #1 Jan 2019 · 772.9M affected Jan 2019 772.9M View breach
Verifications.io Feb 2019 · 763.1M affected Feb 2019 763.1M View breach
Data Enrichment Exposure From PDL Customer Oct 2019 · 622.2M affected Oct 2019 622.2M View breach
Exploit.In Oct 2016 · 593.4M affected Oct 2016 593.4M View breach
Facebook Aug 2019 · 509.5M affected Aug 2019 509.5M View breach
MySpace Jul 2008 · 359.4M affected Jul 2008 359.4M View breach
Wattpad Jun 2020 · 268.8M affected Jun 2020 268.8M View breach
NetEase Oct 2015 · 234.8M affected Oct 2015 234.8M View breach
Deezer Apr 2019 · 229M affected Apr 2019 229M View breach
Cit0day Nov 2020 · 226.9M affected Nov 2020 226.9M HIBP
Twitter Jan 2021 · 211.5M affected Jan 2021 211.5M View breach
Change Healthcare Feb 2024 · 192.7M affected Feb 2024 192.7M View breach
Zynga Sept 2019 · 172.9M affected Sept 2019 172.9M View breach
LinkedIn May 2012 · 164.6M affected May 2012 164.6M View breach
Dubsmash Dec 2018 · 161.7M affected Dec 2018 161.7M View breach
Adobe Oct 2013 · 152.4M affected Oct 2013 152.4M View breach
Equifax May 2017 · 147M affected May 2017 147M View breach
MyFitnessPal Feb 2018 · 143.6M affected Feb 2018 143.6M View breach
Canva May 2019 · 137.3M affected May 2019 137.3M View breach
National Public Data Apr 2024 · 134M affected Apr 2024 134M View breach
Exactis Jun 2018 · 131.6M affected Jun 2018 131.6M View breach
Apollo Jul 2018 · 125.9M affected Jul 2018 125.9M View breach
LinkedIn Scraped Data (2021) Apr 2021 · 125.7M affected Apr 2021 125.7M HIBP
DemandScience by Pure Incubation Feb 2024 · 121.8M affected Feb 2024 121.8M View breach
Gravatar Oct 2020 · 114M affected Oct 2020 114M View breach
Pemiblanc Apr 2018 · 111M affected Apr 2018 111M HIBP
Evite Aug 2013 · 101M affected Aug 2013 101M View breach
1win Nov 2024 · 96.2M affected Nov 2024 96.2M View breach
VK Jan 2012 · 93.3M affected Jan 2012 93.3M View breach
MyHeritage Oct 2017 · 92M affected Oct 2017 92M View breach
Youku Dec 2016 · 91.9M affected Dec 2016 91.9M HIBP
Rambler Mar 2014 · 91.4M affected Mar 2014 91.4M HIBP
Dailymotion Oct 2016 · 85.2M affected Oct 2016 85.2M View breach
Advance Auto Parts Jun 2024 · 79.2M affected Jun 2024 79.2M View breach
Anthem Feb 2015 · 78.8M affected Feb 2015 78.8M
2 sources ▾ HHS CA AG
JD Jan 2013 · 77.4M affected Jan 2013 77.4M HIBP
Nitro Sept 2020 · 77.2M affected Sept 2020 77.2M View breach
Luxottica Mar 2021 · 77.1M affected Mar 2021 77.1M View breach
Under Armour Nov 2025 · 72.7M affected Nov 2025 72.7M View breach
Tokopedia Apr 2020 · 71.4M affected Apr 2020 71.4M View breach
Naz.API Sept 2023 · 70.8M affected Sept 2023 70.8M View breach
Lead Hunter Mar 2020 · 68.7M affected Mar 2020 68.7M View breach
Dropbox Jul 2012 · 68.6M affected Jul 2012 68.6M View breach
You've Been Scraped Oct 2018 · 66.1M affected Oct 2018 66.1M View breach
tumblr Feb 2013 · 65.5M affected Feb 2013 65.5M View breach
Conduent Business Services Oct 2024 · 62.2M affected Oct 2024 62.2M
3 sources ▾ HHS CA AG WA AG
Modern Business Solutions Oct 2016 · 58.8M affected Oct 2016 58.8M View breach
The Post Millennial May 2024 · 57M affected May 2024 57M View breach
Hot Topic Oct 2024 · 56.9M affected Oct 2024 56.9M View breach
Suno Nov 2025 · 55.3M affected Nov 2025 55.3M View breach
iMesh Sept 2013 · 49.5M affected Sept 2013 49.5M View breach
AT&T Aug 2021 · 49.1M affected Aug 2021 49.1M View breach
Netlog Nov 2012 · 49M affected Nov 2012 49M View breach
Houzz May 2018 · 48.9M affected May 2018 48.9M View breach
Straffic Feb 2020 · 48.6M affected Feb 2020 48.6M View breach
Data & Leads Nov 2018 · 44.3M affected Nov 2018 44.3M HIBP
Edmodo May 2017 · 43.4M affected May 2017 43.4M View breach
piZap Dec 2017 · 41.8M affected Dec 2017 41.8M HIBP
ShareThis Jul 2018 · 41M affected Jul 2018 41M View breach
Chegg Apr 2018 · 39.7M affected Apr 2018 39.7M View breach
SHEIN Jun 2018 · 39.1M affected Jun 2018 39.1M View breach
Canadian Tire Oct 2025 · 38.3M affected Oct 2025 38.3M View breach
Last.fm Mar 2012 · 37.2M affected Mar 2012 37.2M HIBP
Poshmark May 2018 · 36.4M affected May 2018 36.4M View breach
Addi Mar 2026 · 34.5M affected Mar 2026 34.5M View breach
Neiman Marcus Apr 2024 · 31.2M affected Apr 2024 31.2M View breach
Internet Archive Sept 2024 · 31.1M affected Sept 2024 31.1M View breach
SoundCloud Dec 2025 · 29.8M affected Dec 2025 29.8M View breach
Evony Jun 2016 · 29.4M affected Jun 2016 29.4M View breach
Tianya Dec 2011 · 29M affected Dec 2011 29M HIBP
HauteLook Aug 2018 · 28.5M affected Aug 2018 28.5M View breach
French Citizens Sept 2024 · 28.4M affected Sept 2024 28.4M View breach
MindJolt Mar 2019 · 28.4M affected Mar 2019 28.4M View breach
Taringa Aug 2017 · 28M affected Aug 2017 28M HIBP
Public Business Data Aug 2021 · 27.9M affected Aug 2021 27.9M HIBP
Speedio Dec 2024 · 27.5M affected Dec 2024 27.5M View breach
Neopets May 2013 · 26.9M affected May 2013 26.9M View breach
LiveJournal Jan 2017 · 26.4M affected Jan 2017 26.4M View breach
QIP Jun 2011 · 26.2M affected Jun 2011 26.2M HIBP
Ticketfly May 2018 · 26.2M affected May 2018 26.2M View breach
Mathway Jan 2020 · 25.7M affected Jan 2020 25.7M View breach
VNG May 2015 · 24.9M affected May 2015 24.9M HIBP
MGM Resorts (2022 Update) Jul 2019 · 24.8M affected Jul 2019 24.8M View breach
bigbasket Oct 2020 · 24.5M affected Oct 2020 24.5M View breach
Hopamedia Aug 2020 · 23.8M affected Aug 2020 23.8M View breach
Paidwork Mar 2026 · 23.3M affected Mar 2026 23.3M View breach
RailYatri Dec 2022 · 23.2M affected Dec 2022 23.2M HIBP
CafePress Feb 2019 · 23.2M affected Feb 2019 23.2M View breach
Wanelo Dec 2018 · 23.2M affected Dec 2018 23.2M View breach
Mangatoon May 2022 · 23M affected May 2022 23M View breach
Covve Feb 2020 · 22.8M affected Feb 2020 22.8M View breach
Domino's India Mar 2021 · 22.5M affected Mar 2021 22.5M HIBP
GFAN Oct 2016 · 22.5M affected Oct 2016 22.5M HIBP
Animoto Jul 2018 · 22.4M affected Jul 2018 22.4M View breach
Read Novel May 2019 · 22.4M affected May 2019 22.4M HIBP
R2Games Nov 2015 · 22.3M affected Nov 2015 22.3M View breach
QuestionPro May 2022 · 22.2M affected May 2022 22.2M View breach
Taobao Jan 2012 · 21.1M affected Jan 2012 21.1M View breach
ParkMobile Mar 2021 · 20.9M affected Mar 2021 20.9M View breach
Hurb Mar 2019 · 20.7M affected Mar 2019 20.7M HIBP
ai.type Dec 2017 · 20.6M affected Dec 2017 20.6M View breach
ShopBack Sept 2020 · 20.5M affected Sept 2020 20.5M HIBP
IndiaMART May 2021 · 20.2M affected May 2021 20.2M HIBP
Aptoide Apr 2020 · 20M affected Apr 2020 20M View breach
Cutout.Pro Feb 2024 · 20M affected Feb 2024 20M HIBP
EyeEm Feb 2018 · 19.6M affected Feb 2018 19.6M View breach
Romwe Jun 2018 · 19.5M affected Jun 2018 19.5M View breach
CDEK Mar 2022 · 19.2M affected Mar 2022 19.2M HIBP
YouNow Feb 2019 · 18.2M affected Feb 2019 18.2M View breach
8tracks Jun 2017 · 18M affected Jun 2017 18M View breach
LimeLeads Aug 2019 · 17.8M affected Aug 2019 17.8M View breach
Prosper Sept 2025 · 17.6M affected Sept 2025 17.6M View breach
Disqus Jul 2012 · 17.6M affected Jul 2012 17.6M View breach
ixigo Jan 2019 · 17.2M affected Jan 2019 17.2M View breach
Fotolog Dec 2018 · 16.7M affected Dec 2018 16.7M HIBP
mail.ru Dump Sept 2014 · 16.6M affected Sept 2014 16.6M HIBP
Zomato May 2017 · 16.5M affected May 2017 16.5M View breach
Eye4Fraud Jan 2023 · 16M affected Jan 2023 16M View breach
Lumin PDF Apr 2019 · 15.5M affected Apr 2019 15.5M View breach
Trello Jan 2024 · 15.1M affected Jan 2024 15.1M View breach
ClearVoice Surveys Aug 2015 · 15.1M affected Aug 2015 15.1M View breach
8fit Jul 2018 · 15M affected Jul 2018 15M View breach
Epik Sept 2021 · 15M affected Sept 2021 15M View breach
000webhost Mar 2015 · 14.9M affected Mar 2015 14.9M View breach
500px Jul 2018 · 14.9M affected Jul 2018 14.9M View breach
Welltok May 2023 · 14.8M affected May 2023 14.8M
2 sources ▾ HHS CA AG
Promo Jun 2020 · 14.6M affected Jun 2020 14.6M View breach
Free Oct 2024 · 13.9M affected Oct 2024 13.9M View breach
Aflac Jun 2025 · 13.9M affected Jun 2025 13.9M
3 sources ▾ HHS CA AG WA AG
HiAPK Jan 2014 · 13.9M affected Jan 2014 13.9M HIBP
McGraw Hill Apr 2026 · 13.5M affected Apr 2026 13.5M View breach
Kaiser Foundation Health Plan May 2023 · 13.4M affected May 2023 13.4M
3 sources ▾ HHS CA AG WA AG
Bukalapak Oct 2017 · 13.4M affected Oct 2017 13.4M HIBP
Yam Jun 2013 · 13.3M affected Jun 2013 13.3M HIBP
Carhartt Aug 2026 · 12.9M affected Aug 2026 12.9M View breach
Cross Fire Aug 2016 · 12.9M affected Aug 2016 12.9M HIBP
IndiHome Nov 2019 · 12.6M affected Nov 2019 12.6M HIBP
CarGurus Feb 2026 · 12.5M affected Feb 2026 12.5M View breach
Zacks Jun 2024 · 12M affected Jun 2024 12M View breach
Instant Checkmate Apr 2019 · 11.9M affected Apr 2019 11.9M View breach
Whitepages Jun 2016 · 11.7M affected Jun 2016 11.7M View breach
Optum360 Jul 2019 · 11.5M affected Jul 2019 11.5M HHS
Unverified Data Source Jan 2021 · 11.5M affected Jan 2021 11.5M HIBP
HCA Healthcare Jun 2023 · 11.3M affected Jun 2023 11.3M View breach
Storenvy Apr 2019 · 11.1M affected Apr 2019 11.1M View breach
Premera Blue Cross Mar 2015 · 11M affected Mar 2015 11M HHS
Jobandtalent Feb 2018 · 11M affected Feb 2018 11M View breach
Armor Games Jan 2019 · 10.6M affected Jan 2019 10.6M View breach
Conduent Business Services Oct 2024 · 10.5M affected Oct 2024 10.5M View breach
TGBUS Sept 2017 · 10.4M affected Sept 2017 10.4M HIBP
Laboratory Aug 2018 · 10.3M affected Aug 2018 10.3M
3 sources ▾ HHS CA AG WA AG
Raaga Dec 2025 · 10.2M affected Dec 2025 10.2M View breach
Madison Square Garden Sports Jun 2026 · 9.8M affected Jun 2026 9.8M View breach
Z-lib Jun 2024 · 9.7M affected Jun 2024 9.7M View breach
Wishbone (2020) Jan 2020 · 9.7M affected Jan 2020 9.7M View breach
Aesto Dec 2025 · 9.5M affected Dec 2025 9.5M
2 sources ▾ HHS WA AG
Adapt Nov 2018 · 9.4M affected Nov 2018 9.4M View breach
Excellus Health Plan Sept 2015 · 9.4M affected Sept 2015 9.4M HHS
Bitly May 2014 · 9.3M affected May 2014 9.3M View breach
Perry Johnson & Associates Mar 2023 · 9.3M affected Mar 2023 9.3M
3 sources ▾ HHS CA AG WA AG
Maximus May 2023 · 9.2M affected May 2023 9.2M
3 sources ▾ HHS CA AG WA AG
7k7k Jan 2011 · 9.1M affected Jan 2011 9.1M HIBP
Jefit Aug 2020 · 9.1M affected Aug 2020 9.1M View breach
Zacks May 2020 · 8.9M affected May 2020 8.9M View breach
Explore Talent (August 2024) Aug 2024 · 8.9M affected Aug 2024 8.9M View breach
Manchester Airports Group Aug 2026 · 8.8M affected Aug 2026 8.8M View breach
Home Chef Feb 2020 · 8.8M affected Feb 2020 8.8M View breach
Dodonew.com Dec 2011 · 8.7M affected Dec 2011 8.7M HIBP
123RF Mar 2020 · 8.7M affected Mar 2020 8.7M View breach
Managed Care of North America Feb 2023 · 8.6M affected Feb 2023 8.6M
3 sources ▾ HHS CA AG WA AG
We Heart It Nov 2013 · 8.6M affected Nov 2013 8.6M View breach
Pitney Bowes Apr 2026 · 8.2M affected Apr 2026 8.2M View breach
Gamigo Mar 2012 · 8.2M affected Mar 2012 8.2M HIBP
Teespring Apr 2020 · 8.2M affected Apr 2020 8.2M View breach
Tunngle Jul 2016 · 8.2M affected Jul 2016 8.2M HIBP
Data Enrichment Records Dec 2016 · 8.2M affected Dec 2016 8.2M View breach
Truth Finder Apr 2019 · 8.2M affected Apr 2019 8.2M HIBP
Heroes of Newerth Dec 2012 · 8.1M affected Dec 2012 8.1M HIBP
Daily Quiz Jan 2021 · 8M affected Jan 2021 8M View breach
Civil Online Jul 2011 · 7.8M affected Jul 2011 7.8M HIBP
Evolve Bank & Trust Feb 2024 · 7.6M affected Feb 2024 7.6M View breach
BlankMediaGames Dec 2018 · 7.6M affected Dec 2018 7.6M View breach
Carnival Apr 2026 · 7.5M affected Apr 2026 7.5M View breach
boAt Mar 2024 · 7.5M affected Mar 2024 7.5M HIBP
uuu9 Sept 2016 · 7.5M affected Sept 2016 7.5M HIBP
17173 Dec 2011 · 7.5M affected Dec 2011 7.5M HIBP
DatPiff Aug 2021 · 7.5M affected Aug 2021 7.5M HIBP
START Jun 2021 · 7.5M affected Jun 2021 7.5M HIBP
TaiLieu Nov 2019 · 7.3M affected Nov 2019 7.3M HIBP
Vietnam Airlines Jun 2025 · 7.3M affected Jun 2025 7.3M View breach
Experian (2015) Sept 2015 · 7.2M affected Sept 2015 7.2M View breach
Animal Jam Oct 2020 · 7.1M affected Oct 2020 7.1M View breach
Lifeboat Jan 2016 · 7.1M affected Jan 2016 7.1M HIBP
Xiaomi Aug 2012 · 7.1M affected Aug 2012 7.1M View breach
OMGPOP Jan 2013 · 7.1M affected Jan 2013 7.1M HIBP
Delta Dental of California May 2023 · 7.1M affected May 2023 7.1M
3 sources ▾ HHS CA AG WA AG
ReverbNation Jan 2014 · 7M affected Jan 2014 7M View breach
23andMe Apr 2023 · 6.9M affected Apr 2023 6.9M View breach
CashCrate Nov 2016 · 6.8M affected Nov 2016 6.8M View breach

Showing 200 of 13,115

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Serus Data Breach Report

  • Monthly report

    September 2026

    Breaches
    146
    People affected
    48.9M
    Accounts leaked
    35.7M
    View report
  • Monthly report

    August 2026

    Breaches
    135
    People affected
    11.2M
    Accounts leaked
    19.3M
    View report
  • Monthly report

    July 2026

    Breaches
    147
    People affected
    23.1M
    Accounts leaked
    89.1M
    View report
  • Monthly report

    June 2026

    Breaches
    151
    People affected
    38.3M
    Accounts leaked
    18.4M
    View report
  • Monthly report

    May 2026

    Breaches
    157
    People affected
    9.3M
    Accounts leaked
    50.3M
    View report
  • Monthly report

    April 2026

    Breaches
    116
    People affected
    9.9M
    Accounts leaked
    41.8M
    View report
  • Monthly report

    March 2026

    Breaches
    150
    People affected
    16.3M
    Accounts leaked
    5.5M
    View report

What is a data breach?

A data breach is when a company loses control of the personal data it holds: attackers break in, an employee leaks it, or a database is left open online. The data then gets sold, traded or posted, and it's used for account takeovers, phishing and identity fraud.

You can't pull leaked data back. What you can do is close the doors it opens: change the password, and every other account that used it, turn on two-factor sign-in, watch for phishing that uses the leaked details, and freeze your credit if your Social Security number was exposed.

Breach data from Have I Been Pwned, licensed under CC BY 4.0; the U.S. Department of Health and Human Services' breach portal; and the public breach notices of the California and Washington Attorneys General (Washington counts are state residents only). Sensitive breaches (such as adult and dating sites), spam lists, fabricated breaches and malware logs aren't listed.

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