Data breaches in 2011
15 data breaches happened in 2011, exposing 104,851,060 accounts in total. The most common exposed data were Email addresses, Usernames, Passwords.
| Service | Breach date | Accounts | Risk |
|---|---|---|---|
| 7k7k * | 2011-01-01 | 9,121,434 | 66 |
| Duowan.com * | 2011-01-01 | 2,639,894 | 66 |
| QIP | 2011-06-01 | 26,183,992 | 68 |
| Dangdang | 2011-06-01 | 4,848,734 | 10 |
| Sony | 2011-06-02 | 37,103 | 81 |
| hackforums.net | 2011-06-25 | 191,540 | 77 |
| Battlefield Heroes | 2011-06-26 | 530,270 | 62 |
| Civil Online * | 2011-07-10 | 7,830,195 | 69 |
| Android Forums | 2011-10-30 | 745,355 | 72 |
| Dodonew.com * | 2011-12-01 | 8,718,404 | 15 |
| China Software Developer Network | 2011-12-21 | 6,414,990 | 66 |
| Stratfor | 2011-12-24 | 859,777 | 89 |
| Tianya | 2011-12-26 | 29,020,808 | 21 |
| RuneScape Boards | 2011-12-26 | 222,762 | 68 |
| 17173 * | 2011-12-28 | 7,485,802 | 66 |
* = The original data marks this breach as unverified, possibly fabricated, or a spam list.
This site organizes publicly available information about data breaches. Data as of October 9, 2026. Breach dates are as originally listed; when only the month is known, the date is recorded as the 1st.