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
No breach by that name yet.
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
Year
| Breach | Date | Affected | Source |
|---|---|---|---|
| | Apr 2025 | 2B WA residents | View breach |
| | Jan 2019 | 772.9M WA residents | View breach |
| | Feb 2019 | 763.1M WA residents | View breach |
| | Oct 2019 | 622.2M WA residents | View breach |
| | Oct 2016 | 593.4M WA residents | View breach |
| | Aug 2019 | 509.5M WA residents | View breach |
| | Jul 2008 | 359.4M WA residents | View breach |
| | Jun 2020 | 268.8M WA residents | View breach |
| | Oct 2015 | 234.8M WA residents | View breach |
| | Apr 2019 | 229M WA residents | View breach |
| | Nov 2020 | 226.9M WA residents | HIBP |
| | Jan 2021 | 211.5M WA residents | View breach |
| | Feb 2024 | 192.7M WA residents | View breach |
| | Sept 2019 | 172.9M WA residents | View breach |
| | May 2012 | 164.6M WA residents | View breach |
| | Dec 2018 | 161.7M WA residents | View breach |
| | Oct 2013 | 152.4M WA residents | View breach |
| | May 2017 | 147M WA residents | View breach |
| | Feb 2018 | 143.6M WA residents | View breach |
| | May 2019 | 137.3M WA residents | View breach |
| | Apr 2024 | 134M WA residents | View breach |
| | Jun 2018 | 131.6M WA residents | View breach |
| | Jul 2018 | 125.9M WA residents | View breach |
| | Apr 2021 | 125.7M WA residents | HIBP |
| | Feb 2024 | 121.8M WA residents | View breach |
| | Oct 2020 | 114M WA residents | View breach |
| | Apr 2018 | 111M WA residents | HIBP |
| | Aug 2013 | 101M WA residents | View breach |
| | Nov 2024 | 96.2M WA residents | View breach |
| | Jan 2012 | 93.3M WA residents | View breach |
| | Oct 2017 | 92M WA residents | View breach |
| | Dec 2016 | 91.9M WA residents | HIBP |
| | Mar 2014 | 91.4M WA residents | HIBP |
| | Oct 2016 | 85.2M WA residents | View breach |
| | Jun 2024 | 79.2M WA residents | View breach |
| | Feb 2015 | 78.8M WA residents | 2 sources ▾ |
| | Jan 2013 | 77.4M WA residents | HIBP |
| | Sept 2020 | 77.2M WA residents | View breach |
| | Mar 2021 | 77.1M WA residents | View breach |
| | Nov 2025 | 72.7M WA residents | View breach |
| | Apr 2020 | 71.4M WA residents | View breach |
| | Sept 2023 | 70.8M WA residents | View breach |
| | Mar 2020 | 68.7M WA residents | View breach |
| | Jul 2012 | 68.6M WA residents | View breach |
| | Oct 2018 | 66.1M WA residents | View breach |
| | Feb 2013 | 65.5M WA residents | View breach |
| | Oct 2024 | 62.2M WA residents | 3 sources ▾ |
| | Oct 2016 | 58.8M WA residents | View breach |
| | May 2024 | 57M WA residents | View breach |
| | Oct 2024 | 56.9M WA residents | View breach |
| | Nov 2025 | 55.3M WA residents | View breach |
| | Sept 2013 | 49.5M WA residents | View breach |
| | Aug 2021 | 49.1M WA residents | View breach |
| | Nov 2012 | 49M WA residents | View breach |
| | May 2018 | 48.9M WA residents | View breach |
| | Feb 2020 | 48.6M WA residents | View breach |
| | Nov 2018 | 44.3M WA residents | HIBP |
| | May 2017 | 43.4M WA residents | View breach |
| | Dec 2017 | 41.8M WA residents | HIBP |
| | Jul 2018 | 41M WA residents | View breach |
| | Apr 2018 | 39.7M WA residents | View breach |
| | Jun 2018 | 39.1M WA residents | View breach |
| | Oct 2025 | 38.3M WA residents | View breach |
| | Mar 2012 | 37.2M WA residents | HIBP |
| | May 2018 | 36.4M WA residents | View breach |
| | Mar 2026 | 34.5M WA residents | View breach |
| | Apr 2024 | 31.2M WA residents | View breach |
| | Sept 2024 | 31.1M WA residents | View breach |
| | Dec 2025 | 29.8M WA residents | View breach |
| | Jun 2016 | 29.4M WA residents | View breach |
| | Dec 2011 | 29M WA residents | HIBP |
| | Aug 2018 | 28.5M WA residents | View breach |
| | Sept 2024 | 28.4M WA residents | View breach |
| | Mar 2019 | 28.4M WA residents | View breach |
| | Aug 2017 | 28M WA residents | HIBP |
| | Aug 2021 | 27.9M WA residents | HIBP |
| | Dec 2024 | 27.5M WA residents | View breach |
| | May 2013 | 26.9M WA residents | View breach |
| | Jan 2017 | 26.4M WA residents | View breach |
| | Jun 2011 | 26.2M WA residents | HIBP |
| | May 2018 | 26.2M WA residents | View breach |
| | Jan 2020 | 25.7M WA residents | View breach |
| | May 2015 | 24.9M WA residents | HIBP |
| | Jul 2019 | 24.8M WA residents | View breach |
| | Oct 2020 | 24.5M WA residents | View breach |
| | Aug 2020 | 23.8M WA residents | View breach |
| | Mar 2026 | 23.3M WA residents | View breach |
| | Dec 2022 | 23.2M WA residents | HIBP |
| | Feb 2019 | 23.2M WA residents | View breach |
| | Dec 2018 | 23.2M WA residents | View breach |
| | May 2022 | 23M WA residents | View breach |
| | Feb 2020 | 22.8M WA residents | View breach |
| | Mar 2021 | 22.5M WA residents | HIBP |
| | Oct 2016 | 22.5M WA residents | HIBP |
| | Jul 2018 | 22.4M WA residents | View breach |
| | May 2019 | 22.4M WA residents | HIBP |
| | Nov 2015 | 22.3M WA residents | View breach |
| | May 2022 | 22.2M WA residents | View breach |
| | Jan 2012 | 21.1M WA residents | View breach |
| | Mar 2021 | 20.9M WA residents | View breach |
| | Mar 2019 | 20.7M WA residents | HIBP |
| | Dec 2017 | 20.6M WA residents | View breach |
| | Sept 2020 | 20.5M WA residents | HIBP |
| | May 2021 | 20.2M WA residents | HIBP |
| | Apr 2020 | 20M WA residents | View breach |
| | Feb 2024 | 20M WA residents | HIBP |
| | Feb 2018 | 19.6M WA residents | View breach |
| | Jun 2018 | 19.5M WA residents | View breach |
| | Mar 2022 | 19.2M WA residents | HIBP |
| | Feb 2019 | 18.2M WA residents | View breach |
| | Jun 2017 | 18M WA residents | View breach |
| | Aug 2019 | 17.8M WA residents | View breach |
| | Sept 2025 | 17.6M WA residents | View breach |
| | Jul 2012 | 17.6M WA residents | View breach |
| | Jan 2019 | 17.2M WA residents | View breach |
| | Dec 2018 | 16.7M WA residents | HIBP |
| | Sept 2014 | 16.6M WA residents | HIBP |
| | May 2017 | 16.5M WA residents | View breach |
| | Jan 2023 | 16M WA residents | View breach |
| | Apr 2019 | 15.5M WA residents | View breach |
| | Jan 2024 | 15.1M WA residents | View breach |
| | Aug 2015 | 15.1M WA residents | View breach |
| | Jul 2018 | 15M WA residents | View breach |
| | Sept 2021 | 15M WA residents | View breach |
| | Mar 2015 | 14.9M WA residents | View breach |
| | Jul 2018 | 14.9M WA residents | View breach |
| | May 2023 | 14.8M WA residents | 2 sources ▾ |
| | Jun 2020 | 14.6M WA residents | View breach |
| | Oct 2024 | 13.9M WA residents | View breach |
| | Jun 2025 | 13.9M WA residents | 3 sources ▾ |
| | Jan 2014 | 13.9M WA residents | HIBP |
| | Apr 2026 | 13.5M WA residents | View breach |
| | May 2023 | 13.4M WA residents | 3 sources ▾ |
| | Oct 2017 | 13.4M WA residents | HIBP |
| | Jun 2013 | 13.3M WA residents | HIBP |
| | Aug 2026 | 12.9M WA residents | View breach |
| | Aug 2016 | 12.9M WA residents | HIBP |
| | Nov 2019 | 12.6M WA residents | HIBP |
| | Feb 2026 | 12.5M WA residents | View breach |
| | Jun 2024 | 12M WA residents | View breach |
| | Apr 2019 | 11.9M WA residents | View breach |
| | Jun 2016 | 11.7M WA residents | View breach |
| | Jul 2019 | 11.5M WA residents | HHS |
| | Jan 2021 | 11.5M WA residents | HIBP |
| | Jun 2023 | 11.3M WA residents | View breach |
| | Apr 2019 | 11.1M WA residents | View breach |
| | Mar 2015 | 11M WA residents | HHS |
| | Feb 2018 | 11M WA residents | View breach |
| | Jan 2019 | 10.6M WA residents | View breach |
| | Oct 2024 | 10.5M WA residents | View breach |
| | Sept 2017 | 10.4M WA residents | HIBP |
| | Aug 2018 | 10.3M WA residents | 3 sources ▾ |
| | Dec 2025 | 10.2M WA residents | View breach |
| | Jun 2026 | 9.8M WA residents | View breach |
| | Jun 2024 | 9.7M WA residents | View breach |
| | Jan 2020 | 9.7M WA residents | View breach |
| | Dec 2025 | 9.5M WA residents | 2 sources ▾ |
| | Nov 2018 | 9.4M WA residents | View breach |
| | Sept 2015 | 9.4M WA residents | HHS |
| | May 2014 | 9.3M WA residents | View breach |
| | Mar 2023 | 9.3M WA residents | 3 sources ▾ |
| | May 2023 | 9.2M WA residents | 3 sources ▾ |
| | Jan 2011 | 9.1M WA residents | HIBP |
| | Aug 2020 | 9.1M WA residents | View breach |
| | May 2020 | 8.9M WA residents | View breach |
| | Aug 2024 | 8.9M WA residents | View breach |
| | Aug 2026 | 8.8M WA residents | View breach |
| | Feb 2020 | 8.8M WA residents | View breach |
| | Dec 2011 | 8.7M WA residents | HIBP |
| | Mar 2020 | 8.7M WA residents | View breach |
| | Feb 2023 | 8.6M WA residents | 3 sources ▾ |
| | Nov 2013 | 8.6M WA residents | View breach |
| | Apr 2026 | 8.2M WA residents | View breach |
| | Mar 2012 | 8.2M WA residents | HIBP |
| | Apr 2020 | 8.2M WA residents | View breach |
| | Jul 2016 | 8.2M WA residents | HIBP |
| | Dec 2016 | 8.2M WA residents | View breach |
| | Apr 2019 | 8.2M WA residents | HIBP |
| | Dec 2012 | 8.1M WA residents | HIBP |
| | Jan 2021 | 8M WA residents | View breach |
| | Jul 2011 | 7.8M WA residents | HIBP |
| | Feb 2024 | 7.6M WA residents | View breach |
| | Dec 2018 | 7.6M WA residents | View breach |
| | Apr 2026 | 7.5M WA residents | View breach |
| | Mar 2024 | 7.5M WA residents | HIBP |
| | Sept 2016 | 7.5M WA residents | HIBP |
| | Dec 2011 | 7.5M WA residents | HIBP |
| | Aug 2021 | 7.5M WA residents | HIBP |
| | Jun 2021 | 7.5M WA residents | HIBP |
| | Nov 2019 | 7.3M WA residents | HIBP |
| | Jun 2025 | 7.3M WA residents | View breach |
| | Sept 2015 | 7.2M WA residents | View breach |
| | Oct 2020 | 7.1M WA residents | View breach |
| | Jan 2016 | 7.1M WA residents | HIBP |
| | Aug 2012 | 7.1M WA residents | View breach |
| | Jan 2013 | 7.1M WA residents | HIBP |
| | May 2023 | 7.1M WA residents | 3 sources ▾ |
| | Jan 2014 | 7M WA residents | View breach |
| | Apr 2023 | 6.9M WA residents | View breach |
| | Nov 2016 | 6.8M WA residents | View breach |
No breach matches that yet.
Showing 200 of 13,115
By sector: Healthcare
Check if you're exposed in a breach with Serus
Find your leaks. Get alerted to new ones.
Serus Data Breach 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.