Data breaches that exposed Website activity
68 breaches (7.2% of the total) exposed Website activity. Below are the yearly counts and the 50 largest of these breaches.
Breaches per year
| Year | Matching | All |
|---|---|---|
| 2007 | 1 | 1 |
| 2008 | 1 | 3 |
| 2009 | 0 | 2 |
| 2010 | 2 | 4 |
| 2011 | 3 | 15 |
| 2012 | 4 | 19 |
| 2013 | 9 | 28 |
| 2014 | 14 | 48 |
| 2015 | 11 | 67 |
| 2016 | 15 | 94 |
| 2017 | 4 | 50 |
| 2018 | 1 | 70 |
| 2019 | 3 | 80 |
| 2020 | 0 | 93 |
| 2021 | 0 | 67 |
| 2022 | 0 | 55 |
| 2023 | 0 | 42 |
| 2024 | 0 | 76 |
| 2025 | 0 | 52 |
| 2026 | 0 | 82 |
Largest breaches
| Service | Breach date | Accounts | Risk |
|---|---|---|---|
| piZap | 2017-12-07 | 41,817,893 | 74 |
| Last.fm | 2012-03-22 | 37,217,682 | 68 |
| QIP | 2011-06-01 | 26,183,992 | 68 |
| Civil Online * | 2011-07-10 | 7,830,195 | 69 |
| BlankMediaGames | 2018-12-28 | 7,633,234 | 72 |
| xat | 2015-11-04 | 5,968,783 | 69 |
| Leet | 2016-09-10 | 5,081,689 | 69 |
| QuinStreet | 2015-12-14 | 4,907,802 | 73 |
| VTech | 2015-11-13 | 4,833,678 | 89 |
| Neteller | 2010-05-17 | 3,619,948 | 76 |
| DLH.net | 2016-07-31 | 3,264,710 | 74 |
| Uiggy | 2016-06-01 | 2,682,650 | 28 |
| ClixSense | 2016-09-04 | 2,424,784 | 87 |
| Patreon | 2015-10-01 | 2,330,382 | 83 |
| gPotato | 2007-07-12 | 2,136,520 | 88 |
| Dungeons & Dragons Online | 2013-04-02 | 1,580,933 | 73 |
| Nival | 2016-02-29 | 1,535,473 | 39 |
| Army Force Online | 2016-05-18 | 1,531,235 | 74 |
| Aternos | 2015-12-06 | 1,436,486 | 69 |
| Lord of the Rings Online | 2013-08-01 | 1,141,278 | 73 |
| Lookbook | 2012-08-24 | 1,074,948 | 75 |
| R2 (2017 forum breach) | 2017-01-01 | 1,023,466 | 68 |
| War Inc. | 2012-07-04 | 1,020,136 | 68 |
| Warframe | 2014-11-24 | 819,478 | 19 |
| Black Hat World | 2014-06-23 | 777,387 | 74 |
| Vedantu | 2019-07-08 | 686,899 | 77 |
| Pokébip | 2015-07-28 | 657,001 | 69 |
| Final Fantasy Shrine | 2015-09-18 | 620,677 | 68 |
| HLTV | 2016-06-19 | 611,070 | 70 |
| Nulled.cr | 2016-05-06 | 599,080 | 81 |
| Paddy Power | 2010-10-25 | 590,954 | 77 |
| BTC-E | 2014-10-01 | 568,340 | 74 |
| vBulletin | 2015-11-03 | 518,966 | 84 |
| Bitcoin Talk | 2015-05-22 | 501,407 | 84 |
| PayAsUGym | 2016-12-15 | 400,260 | 81 |
| Smogon | 2017-09-10 | 386,489 | 70 |
| MrExcel | 2016-12-05 | 366,140 | 74 |
| Torrent Invites | 2013-12-12 | 352,120 | 73 |
| Aimware | 2019-04-28 | 305,470 | 78 |
| Sumo Torrent | 2014-06-21 | 285,191 | 69 |
| Foxy Bingo | 2008-04-04 | 252,216 | 85 |
| Bot of Legends | 2014-11-13 | 238,373 | 69 |
| Cannabis.com | 2014-02-05 | 227,746 | 90 |
| Win7Vista Forum | 2013-09-03 | 202,683 | 81 |
| GTAGaming | 2016-08-01 | 197,184 | 73 |
| hackforums.net | 2011-06-25 | 191,540 | 77 |
| Minefield | 2015-06-28 | 188,343 | 73 |
| AhaShare.com | 2013-05-30 | 180,468 | 73 |
| Heroes of Gaia | 2013-01-04 | 179,967 | 24 |
| PHP Freaks | 2015-10-27 | 173,891 | 73 |
* = 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.