All users which currently have 100% on a site.
| Username | Site | First Track | Master since | Track-Time | From | |
|---|---|---|---|---|---|---|
 | kingpbz | RedTigers Hackit | Apr 19, 2018 - 11:19:51 | Apr 23, 2018 - 11:25:28 | 4d 5m | 0.00% |
 | KimTruth | SuNiNaTaS | Aug 09, 2014 - 13:54:37 | Dec 20, 2014 - 09:50:51 | 132d 20h | 3.71% |
 | kijibwa | HackThisSite | Apr 06, 2010 - 05:07:43 | Jan 16, 2021 - 03:08:28 | 10y 287d | 95.53% |
 | kiam | SuNiNaTaS | May 08, 2020 - 08:32:33 | May 14, 2020 - 12:52:50 | 6d 4h | 0.00% |
| kevinhyun | SuNiNaTaS | May 08, 2014 - 06:10:42 | May 14, 2014 - 10:47:36 | 6d 4h | 6.91% |
 | kev1 | HackBBS | Aug 13, 2010 - 22:35:33 | Jan 04, 2013 - 17:28:51 | 2y 144d | 81.08% |
| kev1 | HackThisSite | Apr 07, 2010 - 20:45:35 | Apr 05, 2023 - 20:31:09 | 13y 23h | 5.58% |
| kev1 | RedTigers Hackit | Dec 12, 2013 - 10:19:07 | Dec 26, 2013 - 09:58:15 | 13d 23h | 8.68% |
 | kernelpanic | +Ma's Reversing | Dec 29, 2018 - 23:59:18 | Dec 29, 2018 - 23:59:18 | 0s | 100.00% |
 | kepten | Gekkó | Aug 25, 2011 - 15:16:53 | Jul 17, 2013 - 13:15:06 | 1y 326d | 47.62% |
| kepten | HackThisSite | Nov 15, 2010 - 16:16:11 | Jan 27, 2021 - 22:58:15 | 10y 76d | 57.31% |
 | Kender | +Ma's Reversing | Feb 28, 2009 - 23:59:57 | May 04, 2009 - 18:23:27 | 64d 17h | 50.00% |
| Kender | Electrica | Feb 02, 2009 - 15:10:16 | May 30, 2009 - 09:23:00 | 116d 17h | 36.36% |
| Kender | HackQuest | Mar 13, 2008 - 20:26:32 | Mar 13, 2008 - 20:26:32 | 0s | 100.00% |
| Kender | hax.tor.hu | Jun 01, 2009 - 12:40:09 | Jun 02, 2009 - 20:11:14 | 1d 7h | 26.00% |
 | KCJones | RedTigers Hackit | May 23, 2016 - 03:15:38 | May 23, 2016 - 10:17:28 | 7h 1m | 0.00% |
| kcats | SuNiNaTaS | Jul 03, 2014 - 18:34:39 | Jul 29, 2014 - 11:02:49 | 25d 16h | 66.87% |
| KazWolfe | ae27ff | Aug 28, 2019 - 06:04:01 | Aug 28, 2019 - 06:04:01 | 0s | 100.00% |
 | kazetkazet | hackburger | Oct 23, 2017 - 17:35:27 | Oct 23, 2017 - 17:35:27 | 0s | 100.00% |
| kazetkazet | hax.tor.hu | Sep 20, 2016 - 19:07:26 | Mar 15, 2017 - 17:05:01 | 175d 22h | 4.00% |
| kazetkazet | RedTigers Hackit | Sep 25, 2016 - 15:27:43 | Sep 25, 2016 - 17:01:12 | 1h 33m | 2.17% |
| kazenojiyu | RedTigers Hackit | Jul 02, 2016 - 20:23:27 | Jul 02, 2016 - 20:28:52 | 5m 25s | 0.00% |
| kasia-tutej | RedTigers Hackit | Aug 30, 2016 - 16:18:00 | Aug 30, 2016 - 16:31:57 | 13m 57s | 0.00% |
 | Karrax | RedTigers Hackit | Dec 06, 2018 - 18:44:51 | Dec 18, 2018 - 00:28:55 | 11d 5h | 0.00% |
 | kanade | HackThisSite | Jun 15, 2014 - 13:01:05 | Jun 15, 2014 - 13:01:05 | 0s | 100.00% |
| kagure | RedTigers Hackit | Jan 26, 2019 - 21:23:12 | Mar 02, 2023 - 21:51:18 | 4y 36d | 0.00% |
 | jusb3 | 247CTF | Oct 04, 2019 - 20:14:47 | Oct 11, 2019 - 23:01:15 | 7d 2h | 77.05% |
| jusb3 | CryptoHack | Jul 08, 2020 - 10:59:47 | Jul 31, 2020 - 07:42:41 | 22d 20h | 17.27% |
| jusb3 | Defend the Web | Apr 17, 2016 - 18:35:36 | May 10, 2017 - 00:15:58 | 1y 22d | 12.41% |
| jusb3 | Electrica | May 28, 2015 - 00:26:43 | Jul 16, 2021 - 19:03:07 | 6y 51d | 2.27% |
| jusb3 | Gekkó | Jul 11, 2017 - 19:40:38 | Jun 29, 2023 - 22:53:24 | 5y 354d | 40.74% |
| jusb3 | hackburger | Jul 18, 2017 - 16:13:27 | Jul 24, 2017 - 06:15:39 | 5d 14h | 8.97% |
| jusb3 | Hacker Gateway | Apr 02, 2017 - 14:04:49 | Apr 02, 2017 - 23:49:47 | 9h 44m | 8.70% |
| jusb3 | HackThisSite | Mar 13, 2014 - 10:27:24 | Sep 07, 2017 - 00:30:29 | 3y 178d | 6.70% |
| jusb3 | hax.tor.hu | Dec 06, 2016 - 13:29:05 | Dec 10, 2016 - 21:27:15 | 4d 7h | 16.00% |
| jusb3 | LordofSQLi | Jun 24, 2019 - 12:55:03 | Jun 26, 2019 - 15:21:37 | 2d 2h | 38.78% |
| jusb3 | Omega Project | Nov 01, 2017 - 17:45:17 | Jul 03, 2020 - 10:31:17 | 2y 244d | 0.00% |
| jusb3 | Rankk | May 16, 2015 - 22:36:42 | Apr 14, 2021 - 11:35:39 | 5y 334d | 3.25% |
| jusb3 | RedTigers Hackit | Apr 21, 2016 - 16:31:17 | Aug 10, 2016 - 09:48:59 | 110d 17h | 0.00% |
| jusb3 | Reversing.Kr | Oct 02, 2017 - 21:33:15 | Jun 05, 2020 - 18:09:02 | 2y 246d | 0.00% |
| jusb3 | RingZer0 Team Online CTF | Mar 09, 2017 - 19:21:15 | Dec 21, 2022 - 22:00:59 | 5y 288d | 0.80% |
| jusb3 | SolveMe | Apr 14, 2017 - 17:04:13 | May 10, 2017 - 17:19:07 | 26d 14m | 38.89% |
| jusb3 | SuNiNaTaS | Jul 02, 2023 - 10:37:36 | Jul 02, 2023 - 13:27:55 | 2h 50m | 91.84% |
| jusb3 | Tasteless | Jul 06, 2017 - 20:09:49 | Aug 11, 2022 - 15:44:07 | 5y 36d | 3.05% |
| jusb3 | ThisisLegal.com | Mar 23, 2017 - 00:09:04 | May 11, 2017 - 00:16:28 | 48d 23h | 26.83% |
| jusb3 | try to decrypt | Oct 23, 2017 - 21:16:02 | Aug 05, 2020 - 17:29:18 | 2y 286d | 92.86% |
| jusb3 | Valhalla | Mar 01, 2017 - 16:28:07 | Sep 29, 2018 - 12:36:29 | 1y 211d | 10.81% |
| jusb3 | WeChall | Mar 09, 2014 - 23:07:43 | Apr 27, 2023 - 17:37:50 | 9y 50d | 1.36% |
| jusb3 | Yoire | May 22, 2017 - 03:47:54 | Oct 06, 2017 - 22:42:51 | 137d 18h | 24.48% |
 | JuanMusic1 | RedTigers Hackit | May 07, 2021 - 02:17:55 | Jun 09, 2021 - 23:23:23 | 33d 21h | 0.00% |