| 2025-11-03 06:00:17 | menace | Set release date to May 1991 |
| 2025-11-03 06:00:08 | menace | Edited notes |
| 2021-06-29 06:56:31 | menace | Edited notes |
| 2020-01-13 16:32:58 | sensenstahl | Edited notes |
| 2020-01-13 16:30:02 | sensenstahl | Updated link http://www.sensenstahl.com/untergrund_mirror/bbs/maximum_security_bbs4a.zip |
| 2020-01-13 16:29:57 | sensenstahl | Set title to 'Maximum Security BBS (4a)' |
| 2017-12-08 20:02:04 | sensenstahl | Added credit for RaD Man on Maximum Security BBS (4): Graphics (Ansi) |
| 2017-12-08 20:01:55 | sensenstahl | Added link https://www.pouet.net/prod.php?which=72672 |
| 2017-12-08 20:00:52 | sensenstahl | Added screenshot |
| 2017-12-08 20:00:46 | sensenstahl | Added production 'Maximum Security BBS (4)' |