All users which currently have 100% on a site.
| Username | Site | First Track | Master since | Track-Time | From | |
|---|---|---|---|---|---|---|
 | j_m | try to decrypt | Dec 19, 2025 - 19:02:17 | Jun 29, 2026 - 22:10:13 | 192d 3h | 0,00% |
 | k1ntx0_barrilete | RedTigers Hackit | May 16, 2026 - 14:11:03 | May 18, 2026 - 17:45:19 | 2d 3h | 0,00% |
 | kagure | RedTigers Hackit | Jan 26, 2019 - 21:23:12 | Mar 02, 2023 - 21:51:18 | 4y 36d | 0,00% |
 | Karrax | RedTigers Hackit | Dec 06, 2018 - 18:44:51 | Dec 18, 2018 - 00:28:55 | 11d 5h | 0,00% |
 | kasia-tutej | RedTigers Hackit | Aug 30, 2016 - 16:18:00 | Aug 30, 2016 - 16:31:57 | 13m 57s | 0,00% |
 | kazenojiyu | RedTigers Hackit | Jul 02, 2016 - 20:23:27 | Jul 02, 2016 - 20:28:52 | 5m 25s | 0,00% |
 | KCJones | RedTigers Hackit | May 23, 2016 - 03:15:38 | May 23, 2016 - 10:17:28 | 7h 1m | 0,00% |
| kiam | SuNiNaTaS | May 08, 2020 - 08:32:33 | May 14, 2020 - 12:52:50 | 6d 4h | 0,00% |
 | Kilttarily | SuNiNaTaS | Feb 09, 2026 - 16:15:40 | Mar 20, 2026 - 07:21:34 | 38d 15h | 0,00% |
| kingpbz | RedTigers Hackit | Apr 19, 2018 - 11:19:51 | Apr 23, 2018 - 11:25:28 | 4d 5m | 0,00% |
| kismet | SuNiNaTaS | Apr 20, 2012 - 16:59:47 | Oct 26, 2025 - 05:30:07 | 13y 191d | 0,00% |
| kismet | RedTigers Hackit | May 22, 2013 - 21:05:48 | Jun 20, 2016 - 22:35:30 | 3y 30d | 0,00% |
| kismet | Hack The Web | Oct 07, 2025 - 06:37:13 | Jan 26, 2026 - 02:27:26 | 110d 19h | 0,00% |
| kismet | HackThisSite | Oct 11, 2025 - 09:42:46 | May 18, 2026 - 22:23:46 | 219d 12h | 0,00% |
| kithyane | CSTutoringCenter | Jan 10, 2011 - 18:32:07 | Feb 08, 2011 - 21:34:07 | 29d 3h | 0,00% |
| KnightKoroviev | Reversing.Kr | Feb 21, 2014 - 22:01:23 | Apr 28, 2014 - 00:01:28 | 65d 2h | 0,00% |
 | kompel | RedTigers Hackit | Mar 19, 2021 - 22:49:53 | Jul 29, 2021 - 10:16:07 | 131d 11h | 0,00% |
| kompel | SuNiNaTaS | Oct 19, 2023 - 15:42:22 | Nov 25, 2023 - 11:19:00 | 36d 19h | 0,00% |
| ksydfius | RedTigers Hackit | Nov 24, 2013 - 21:08:38 | Nov 24, 2013 - 22:38:05 | 1h 29m | 0,00% |
 | kumaus | RedTigers Hackit | Nov 19, 2015 - 21:40:17 | Nov 25, 2015 - 11:51:36 | 5d 14h | 0,00% |
 | kuroneko | RedTigers Hackit | Apr 30, 2016 - 09:42:48 | Oct 16, 2016 - 09:10:13 | 168d 23h | 0,00% |
| kwapik | RedTigers Hackit | Feb 23, 2017 - 20:48:33 | May 04, 2017 - 17:04:12 | 69d 20h | 0,00% |
| kwisatz | CSTutoringCenter | Dec 19, 2011 - 00:11:23 | Apr 11, 2012 - 15:21:49 | 114d 15h | 0,00% |
| kwisatz | Security Override | Mar 11, 2012 - 16:29:46 | Mar 08, 2014 - 12:30:22 | 1y 361d | 0,00% |
| kwisatz | IRISSCON 2012 Lost Challenges | Feb 28, 2014 - 23:33:35 | Mar 01, 2014 - 01:43:54 | 2h 10m | 0,00% |
| l0g | RedTigers Hackit | Mar 27, 2020 - 10:59:14 | Mar 31, 2020 - 07:31:39 | 3d 20h | 0,00% |
| LACiA | Webhacking.kr | Mar 28, 2024 - 10:28:07 | Apr 10, 2024 - 13:34:46 | 13d 3h | 0,00% |
| laxa | RedTigers Hackit | Jun 30, 2016 - 19:51:04 | Jul 22, 2016 - 00:54:40 | 21d 5h | 0,00% |
| LeaveRet | Mathchall | Dec 27, 2013 - 16:34:44 | Jan 04, 2014 - 21:51:49 | 8d 5h | 0,00% |
| Lie | RedTigers Hackit | Mar 20, 2026 - 09:43:16 | Mar 22, 2026 - 20:22:00 | 2d 10h | 0,00% |
 | livinskull | Hack The Web | Feb 20, 2025 - 21:12:10 | Feb 20, 2025 - 21:12:24 | 14s | 0,00% |
| love0day | Security Override | May 18, 2014 - 17:36:19 | Sep 14, 2014 - 09:17:08 | 118d 15h | 0,00% |
| lovenunu | RedTigers Hackit | Sep 27, 2017 - 15:35:36 | Sep 28, 2017 - 10:18:46 | 18h 43m | 0,00% |
| lupin16 | RedTigers Hackit | Oct 02, 2024 - 11:12:43 | Apr 09, 2025 - 06:07:40 | 188d 18h | 0,00% |
 | Luthorien | RedTigers Hackit | Jul 25, 2018 - 13:04:39 | Jul 26, 2018 - 10:23:37 | 21h 18m | 0,00% |
| Luxerails | RedTigers Hackit | Jul 08, 2013 - 21:25:46 | Jul 08, 2013 - 23:15:34 | 1h 49m | 0,00% |
| luzark | RedTigers Hackit | Mar 04, 2014 - 15:10:14 | Mar 11, 2014 - 11:24:13 | 6d 20h | 0,00% |
| M4rg0 | RedTigers Hackit | Feb 07, 2015 - 01:49:39 | Feb 15, 2015 - 18:44:30 | 8d 16h | 0,00% |
| madbat2 | Tasteless | Sep 27, 2013 - 16:38:09 | Dec 21, 2014 - 09:52:14 | 1y 84d | 0,00% |
| madbat2 | RedTigers Hackit | Oct 12, 2013 - 21:44:10 | Oct 13, 2013 - 00:11:07 | 2h 26m | 0,00% |
| madbat2 | Security Override | Jan 13, 2014 - 23:06:00 | Jan 29, 2014 - 12:43:15 | 15d 13h | 0,00% |
| madbat2 | Reversing.Kr | Sep 06, 2014 - 13:05:20 | Sep 30, 2014 - 17:56:13 | 24d 4h | 0,00% |
 | mark | RedTigers Hackit | Feb 25, 2014 - 20:53:36 | Mar 05, 2014 - 22:14:16 | 8d 1h | 0,00% |
 | Mart | Security Override | Sep 25, 2012 - 20:19:24 | Jan 21, 2015 - 19:26:07 | 2y 117d | 0,00% |
| martek | RedTigers Hackit | Jul 15, 2013 - 23:47:43 | Jan 10, 2015 - 14:28:13 | 1y 178d | 0,00% |
| martek | CSTutoringCenter | Aug 13, 2013 - 00:57:30 | Nov 26, 2015 - 23:15:43 | 2y 105d | 0,00% |
 | mathpseudo | RedTigers Hackit | Nov 27, 2013 - 20:39:53 | Jun 28, 2014 - 18:20:58 | 212d 21h | 0,00% |
| MattK | Hack The Web | Aug 03, 2025 - 18:14:34 | Aug 08, 2025 - 23:18:03 | 5d 5h | 0,00% |
| mattoufoutu | RedTigers Hackit | Mar 05, 2014 - 00:48:13 | Mar 11, 2014 - 03:33:10 | 6d 2h | 0,00% |
| MausClaus | RedTigers Hackit | May 17, 2020 - 21:15:15 | Jun 04, 2020 - 22:53:00 | 18d 1h | 0,00% |