# The biggest data breaches in history

The largest leaks and hacks of personal data ever recorded, by number of accounts or records affected: from Yahoo's three billion accounts to Equifax and Capital One.

- 15 votes · 22 items
- Jul 13, 2026 · cardiffstargazer
- https://even.best/en/l/1588/the-biggest-data-breaches-in-history

## Top 22

1. **Yahoo** (2 · ▲2 ▼0) — 2013: every one of its 3 billion accounts was affected, the largest breach of a single company.
2. **Facebook** (2 · ▲2 ▼0) — 2019: data on about 533 million users, later published free on a forum.
3. **Marriott International** (2 · ▲2 ▼0) — Its Starwood reservation system was compromised from 2014 to 2018: up to 500 million guests.
4. **National Public Data** (1 · ▲1 ▼0) — A background-check firm whose leak exposed about 2.9 billion records, including Social Security numbers.
5. **First American Financial** (1 · ▲1 ▼0) — 2019: about 885 million property and mortgage documents left exposed online.
6. **Adult FriendFinder** (1 · ▲1 ▼0) — 2016: about 412 million accounts of the dating network.
7. **NetEase** (1 · ▲1 ▼0) — 2015: about 235 million accounts of the Chinese internet giant.
8. **Adobe** (1 · ▲1 ▼0) — 2013: about 153 million user records and source code stolen.
9. **Heartland Payment Systems** (1 · ▲1 ▼0) — 2008: about 130 million credit and debit cards compromised.
10. **JPMorgan Chase** (1 · ▲1 ▼0) — 2014: data on 76 million households and 7 million businesses.
11. **Dubsmash** (0 · ▲1 ▼1) — 2018: about 162 million accounts of the lip-sync video app.
12. **Aadhaar** (0 · ▲0 ▼0) — 2018: about 1.1 billion records from India's national ID system were exposed.
13. **Alibaba** (0 · ▲0 ▼0) — 2019: about 1.1 billion records from its Taobao shopping site were scraped.
14. **LinkedIn** (0 · ▲0 ▼0) — 2021: data on about 700 million users scraped and put up for sale.
15. **Sina Weibo** (0 · ▲0 ▼0) — 2020: about 538 million user records from the Chinese social network.
16. **MySpace** (0 · ▲0 ▼0) — About 360 million old accounts surfaced for sale in 2016.
17. **Exactis** (0 · ▲0 ▼0) — 2018: a marketing database of about 340 million records left on an open server.
18. **Zynga** (0 · ▲0 ▼0) — 2019: about 218 million players of Words With Friends and other games.
19. **Equifax** (0 · ▲0 ▼0) — 2017: the credit bureau exposed data on about 147 million people.
20. **eBay** (0 · ▲0 ▼0) — 2014: hackers reached the data of about 145 million users.
21. **Capital One** (0 · ▲0 ▼0) — 2019: about 100 million customers affected by a cloud misconfiguration.
22. **Home Depot** (0 · ▲0 ▼0) — 2014: about 56 million payment cards stolen from its tills.

How is this ranking ordered? By people's votes: each ▲ adds a point and each ▼ takes one away. Anyone can vote and add what is missing.