All users which currently have 100% on a site.
| Username | Site | First Track | Master since | Track-Time | From | |
|---|---|---|---|---|---|---|
 | kompel | SuNiNaTaS | Oct 19, 2023 - 15:42:22 | Nov 25, 2023 - 11:19:00 | 36d 20h | 0.00% |
| kompel | RedTigers Hackit | Mar 19, 2021 - 22:49:53 | Jul 29, 2021 - 10:16:07 | 131d 10h | 0.00% |
 | KnightKoroviev | Reversing.Kr | Feb 21, 2014 - 22:01:23 | Apr 28, 2014 - 00:01:28 | 65d 1h | 0.00% |
 | kithyane | CSTutoringCenter | Jan 10, 2011 - 18:32:07 | Feb 08, 2011 - 21:34:07 | 29d 3h | 0.00% |
 | kismet | RedTigers Hackit | May 22, 2013 - 21:05:48 | Jun 20, 2016 - 22:35:30 | 3y 30d | 0.00% |
 | kingpbz | RedTigers Hackit | Apr 19, 2018 - 11:19:51 | Apr 23, 2018 - 11:25:28 | 4d 5m | 0.00% |
 | kiam | SuNiNaTaS | May 08, 2020 - 08:32:33 | May 14, 2020 - 12:52:50 | 6d 4h | 0.00% |
| KCJones | RedTigers Hackit | May 23, 2016 - 03:15:38 | May 23, 2016 - 10:17:28 | 7h 1m | 0.00% |
| 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% |
 | kagure | RedTigers Hackit | Jan 26, 2019 - 21:23:12 | Mar 02, 2023 - 21:51:18 | 4y 36d | 0.00% |
 | jusb3 | Omega Project | Nov 01, 2017 - 17:45:17 | Jul 03, 2020 - 10:31:17 | 2y 244d | 0.00% |
| jusb3 | Reversing.Kr | Oct 02, 2017 - 21:33:15 | Jun 05, 2020 - 18:09:02 | 2y 246d | 0.00% |
| jusb3 | RedTigers Hackit | Apr 21, 2016 - 16:31:17 | Aug 10, 2016 - 09:48:59 | 110d 17h | 0.00% |
 | JuanMusic1 | RedTigers Hackit | May 07, 2021 - 02:17:55 | Jun 09, 2021 - 23:23:23 | 33d 21h | 0.00% |
| JrXnm | RedTigers Hackit | Jul 24, 2018 - 11:13:07 | Aug 04, 2018 - 17:48:05 | 11d 6h | 0.00% |
 | JosipF | RedTigers Hackit | Jul 24, 2013 - 17:56:46 | Jul 25, 2013 - 15:54:56 | 21h 58m | 0.00% |
| jjk | OverTheWire.org | Feb 25, 2014 - 15:12:00 | Dec 26, 2014 - 18:20:32 | 304d 3h | 0.00% |
| jjk | Electrica | Apr 14, 2012 - 18:07:24 | Dec 11, 2013 - 00:42:58 | 1y 240d | 0.00% |
| Jinx | IRISSCON 2012 Lost Challenges | Sep 20, 2013 - 20:47:16 | Mar 05, 2014 - 10:20:52 | 165d 14h | 0.00% |
 | jinmo123 | RedTigers Hackit | Nov 02, 2013 - 05:19:55 | Nov 02, 2013 - 09:39:59 | 4h 20m | 0.00% |
| jinmo123 | Tasteless | Oct 23, 2013 - 18:21:28 | Oct 24, 2013 - 17:18:58 | 22h 57m | 0.00% |
| jimeefr | RedTigers Hackit | Apr 18, 2016 - 12:25:55 | Apr 18, 2016 - 14:41:46 | 2h 15m | 0.00% |
| JHSN | RedTigers Hackit | Apr 25, 2017 - 19:58:48 | Apr 27, 2017 - 17:01:10 | 1d 21h | 0.00% |
| JesseMK | RedTigers Hackit | Jul 13, 2016 - 04:23:38 | Jul 19, 2016 - 18:06:31 | 6d 13h | 0.00% |
| jefenux99 | RedTigers Hackit | Nov 18, 2015 - 23:15:50 | Nov 18, 2015 - 23:24:50 | 9m | 0.00% |
| Jarvis777 | RedTigers Hackit | Aug 04, 2016 - 01:21:45 | Aug 04, 2016 - 21:01:19 | 19h 39m | 0.00% |
| jablonskim | RedTigers Hackit | Aug 22, 2013 - 20:00:38 | Jan 29, 2017 - 10:25:09 | 3y 160d | 0.00% |
| J4Nobody | RedTigers Hackit | Aug 10, 2018 - 03:59:49 | Aug 29, 2018 - 17:56:45 | 19d 13h | 0.00% |
| ITPPA | RedTigers Hackit | Feb 10, 2017 - 07:36:27 | Mar 28, 2017 - 06:48:39 | 45d 22h | 0.00% |
 | IPYouFy | Revolution Elite | Apr 20, 2011 - 20:57:10 | May 10, 2011 - 21:19:52 | 20d 22m | 0.00% |
| IPYouFy | CSTutoringCenter | Mar 26, 2011 - 23:41:13 | Apr 02, 2011 - 16:18:29 | 6d 15h | 0.00% |
| iolrachas | RedTigers Hackit | Feb 13, 2016 - 19:14:54 | Feb 13, 2016 - 19:16:35 | 1m 41s | 0.00% |
 | integeruser | CSTutoringCenter | Dec 27, 2014 - 16:12:41 | Feb 02, 2016 - 20:54:43 | 1y 37d | 0.00% |
| integeruser | RedTigers Hackit | May 03, 2014 - 23:08:06 | May 27, 2014 - 12:30:31 | 23d 13h | 0.00% |
 | initzr | RedTigers Hackit | Mar 20, 2019 - 00:07:37 | Mar 20, 2019 - 05:20:48 | 5h 13m | 0.00% |
| hundan | SolveMe | Apr 11, 2017 - 06:55:05 | May 19, 2018 - 05:07:28 | 1y 37d | 0.00% |
| houjingyi | RedTigers Hackit | Dec 29, 2016 - 05:17:57 | Dec 30, 2016 - 05:27:44 | 1d 9m | 0.00% |
 | Holographic | RedTigers Hackit | Jan 27, 2014 - 08:06:27 | Jan 28, 2014 - 10:44:12 | 1d 2h | 0.00% |
| hervas | RedTigers Hackit | Feb 02, 2014 - 09:36:11 | Feb 04, 2014 - 23:56:00 | 2d 14h | 0.00% |
| Hertz | Tasteless | Aug 12, 2013 - 14:22:49 | Oct 07, 2013 - 23:40:46 | 56d 9h | 0.00% |
| Hertz | RedTigers Hackit | Jul 01, 2013 - 18:36:13 | Sep 04, 2013 - 22:19:16 | 65d 3h | 0.00% |
| HelloJet | RedTigers Hackit | Aug 23, 2018 - 15:09:47 | Oct 09, 2018 - 11:42:45 | 46d 20h | 0.00% |
| hds | RedTigers Hackit | Feb 13, 2015 - 15:10:29 | Feb 15, 2015 - 06:22:01 | 1d 15h | 0.00% |
| hdarwin | Webhacking.kr | Dec 17, 2012 - 11:53:36 | Jan 10, 2013 - 09:52:27 | 23d 21h | 0.00% |
| Hanos | SuNiNaTaS | Sep 08, 2014 - 04:38:33 | Oct 10, 2014 - 13:47:27 | 32d 9h | 0.00% |
| HackingGuy | RedTigers Hackit | Jun 02, 2016 - 16:14:49 | Nov 07, 2016 - 22:49:25 | 158d 7h | 0.00% |
| h4ck_1 | Tasteless | Jan 23, 2014 - 17:14:23 | Apr 06, 2014 - 05:09:06 | 72d 10h | 0.00% |
| h1water | RedTigers Hackit | Apr 04, 2018 - 03:51:30 | Apr 09, 2018 - 03:56:46 | 5d 5m | 0.00% |