All users which currently have 100% on a site.
| Username | Site | First Track | Master since | Track-Time | From | |
|---|---|---|---|---|---|---|
 | jusb3 | Reversing.Kr | Oct 02, 2017 - 21:33:15 | Jun 05, 2020 - 18:09:02 | 2y 246d | 0,00% |
| jusb3 | Omega Project | Nov 01, 2017 - 17:45:17 | Jul 03, 2020 - 10:31:17 | 2y 244d | 0,00% |
 | JuanMusic1 | RedTigers Hackit | May 07, 2021 - 02:17:55 | Jun 09, 2021 - 23:23:23 | 33d 21h | 0,00% |
| juanescobar | RedTigers Hackit | Feb 27, 2015 - 00:26:33 | Mar 01, 2015 - 05:24:24 | 2d 4h | 5,42% |
 | jsmind | SuNiNaTaS | Apr 23, 2012 - 10:32:24 | Apr 23, 2012 - 10:32:24 | 0s | 100,00% |
 | JrXnm | RedTigers Hackit | Jul 24, 2018 - 11:13:07 | Aug 04, 2018 - 17:48:05 | 11d 6h | 0,00% |
 | joyflower | pwnable.kr | Jul 19, 2016 - 12:02:51 | Nov 24, 2016 - 06:21:59 | 127d 18h | 6,86% |
 | JosipF | RedTigers Hackit | Jul 24, 2013 - 17:56:46 | Jul 25, 2013 - 15:54:56 | 21h 58m | 0,00% |
| joizel | SuNiNaTaS | Dec 03, 2015 - 14:51:52 | Dec 03, 2015 - 14:51:52 | 0s | 100,00% |
| jnvb | SuNiNaTaS | Sep 17, 2012 - 18:54:04 | Sep 19, 2012 - 04:36:31 | 1d 9h | 63,87% |
| jjk | hax.tor.hu | Jun 03, 2014 - 22:54:49 | Feb 10, 2019 - 20:48:05 | 4y 252d | 98,00% |
| jjk | WeChall | Mar 23, 2008 - 18:34:06 | Dec 30, 2011 - 09:33:29 | 3y 281d | 3,45% |
| jjk | Electrica | Apr 14, 2012 - 18:07:24 | Dec 11, 2013 - 00:42:58 | 1y 240d | 0,00% |
| jjk | OverTheWire.org | Feb 25, 2014 - 15:12:00 | Dec 26, 2014 - 18:20:32 | 304d 3h | 0,00% |
| Jinx | LordofSQLi | Feb 23, 2026 - 20:20:17 | Apr 04, 2026 - 14:51:43 | 39d 18h | 85,71% |
| Jinx | Electrica | Aug 29, 2011 - 20:36:58 | Jun 03, 2026 - 16:02:41 | 14y 281d | 45,45% |
| Jinx | HackThisSite | Jul 02, 2009 - 21:02:05 | Apr 05, 2023 - 20:28:38 | 13y 279d | 44,42% |
| Jinx | Hack The Web | Mar 03, 2025 - 16:20:05 | Apr 04, 2026 - 13:21:15 | 1y 31d | 33,26% |
| Jinx | Yoire | May 08, 2012 - 15:52:08 | Jun 18, 2026 - 15:21:07 | 14y 43d | 14,30% |
| Jinx | RedTigers Hackit | Mar 07, 2026 - 17:25:35 | Mar 07, 2026 - 17:55:58 | 30m 23s | 14,10% |
| Jinx | Revolution Elite | Feb 15, 2011 - 15:41:43 | Jun 20, 2011 - 22:01:06 | 125d 6h | 6,82% |
| Jinx | SuNiNaTaS | Apr 20, 2012 - 15:51:08 | Mar 13, 2026 - 20:04:11 | 13y 330d | 6,06% |
| Jinx | Webhacking.kr | Jun 15, 2011 - 23:27:12 | Jun 27, 2026 - 20:18:49 | 15y 15d | 1,94% |
| Jinx | IRISSCON 2012 Lost Challenges | Sep 20, 2013 - 20:47:16 | Mar 05, 2014 - 10:20:52 | 165d 13h | 0,00% |
| Jinx | try to decrypt | Oct 27, 2017 - 19:29:39 | Jun 02, 2026 - 19:38:06 | 8y 220d | 0,00% |
| Jinx | Reversing.Kr | Apr 08, 2012 - 15:06:53 | Jun 12, 2026 - 13:45:27 | 14y 67d | 0,00% |
| Jinx | mrradio.kr | Jun 11, 2026 - 06:34:23 | Jun 13, 2026 - 06:55:18 | 2d 20m | 0,00% |
| Jinx | CryptoHack | Apr 09, 2020 - 21:42:09 | Jun 20, 2026 - 18:00:48 | 6y 72d | 0,00% |
| Jinx | 247CTF | Dec 03, 2019 - 14:18:53 | Jun 26, 2026 - 06:25:56 | 6y 206d | 0,00% |
| jinmo123 | SuNiNaTaS | Jan 05, 2013 - 08:53:25 | Jan 05, 2013 - 08:53:25 | 0s | 100,00% |
| jinmo123 | pwnable.kr | Mar 10, 2016 - 15:57:16 | May 06, 2016 - 08:29:07 | 56d 16h | 96,98% |
| jinmo123 | Tasteless | Oct 23, 2013 - 18:21:28 | Oct 24, 2013 - 17:18:58 | 22h 57m | 0,00% |
| jinmo123 | RedTigers Hackit | Nov 02, 2013 - 05:19:55 | Nov 02, 2013 - 09:39:59 | 4h 20m | 0,00% |
| jin03 | SuNiNaTaS | Apr 20, 2012 - 00:29:54 | Apr 20, 2012 - 00:29:54 | 0s | 100,00% |
| JimmyZhou | RedTigers Hackit | Mar 04, 2015 - 08:16:13 | Mar 04, 2015 - 08:16:13 | 0s | 100,00% |
 | 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% |
| jeong0su | SuNiNaTaS | Jun 09, 2016 - 07:24:08 | Jun 27, 2016 - 08:56:47 | 18d 1h | 84,38% |
| Jeong | SuNiNaTaS | Nov 01, 2014 - 17:10:16 | Jan 16, 2015 - 15:55:28 | 75d 22h | 87,47% |
| jefenux99 | RedTigers Hackit | Nov 18, 2015 - 23:15:50 | Nov 18, 2015 - 23:24:50 | 9m | 0,00% |
 | jcfs | Net-Force | Oct 25, 2008 - 21:42:02 | Oct 25, 2008 - 21:42:02 | 0s | 100,00% |
| Jarvis777 | RedTigers Hackit | Aug 04, 2016 - 01:21:45 | Aug 04, 2016 - 21:01:19 | 19h 39m | 0,00% |
| JamesV | ae27ff | Jul 06, 2024 - 12:49:58 | Jul 06, 2024 - 12:49:58 | 0s | 100,00% |
| Jakkdu | Reversing.Kr | Sep 26, 2013 - 10:08:48 | Oct 29, 2013 - 09:31:38 | 32d 23h | 58,06% |
| JaeHyuk-Lim | wargame.kr | Dec 20, 2014 - 14:16:08 | Dec 20, 2014 - 14:16:08 | 0s | 100,00% |
| JaeHyuk-Lim | SuNiNaTaS | Dec 20, 2014 - 14:16:20 | Dec 20, 2014 - 14:16:20 | 0s | 100,00% |
| JaeHyuk-Lim | Webhacking.kr | Dec 20, 2014 - 14:16:18 | Apr 29, 2015 - 11:02:55 | 129d 20h | 98,30% |
| JaeHyuk-Lim | RedTigers Hackit | Dec 27, 2014 - 02:59:45 | Apr 29, 2015 - 10:49:25 | 123d 7h | 31,45% |
 | jablonskim | Hacker Gateway | Mar 10, 2017 - 01:04:01 | Mar 10, 2017 - 14:15:58 | 13h 11m | 63,64% |