| 2025-04-07 05:31:54 | menace | Added Tyrant as a member of Defcon One |
| 2021-01-13 02:25:03 | dipswitch | Added Defcon One as organiser of Quadlite, Defcon One, Onyx Party 1988 |
| 2021-01-03 06:55:41 | menace | Added Two Flower as a member of Defcon One |
| 2020-08-01 09:46:19 | menace | Added Major Rom as a member of Defcon One |
| 2020-07-24 14:58:07 | 100bit | Added Asphyx as a member of Defcon One |
| 2020-07-24 14:42:10 | 100bit | Added Crime as a member of Defcon One |
| 2020-01-05 06:24:13 | menace | Added Skylord as a member of Defcon One |
| 2019-10-12 21:02:19 | menace | Edited nick 'Defcon One': changed aliases to 'Defcon 1, Defcon1' |
| 2019-10-12 21:02:09 | menace | Deleted nick 'Defcon 1' |
| 2019-10-12 20:59:58 | menace | Added Frantic as a member of Defcon One |
| 2019-10-12 20:59:09 | menace | Edited nick 'Defcon One': changed differentiator to 'amiga/.de' |
| 2019-10-12 20:56:52 | menace | Added nick 'Defcon 1' |
| 2017-08-04 20:04:23 | menace | Edited notes |
| 2017-03-04 17:05:12 | dipswitch | Added credit for Defcon One on Cracker Journal 17: Text (Interviewed) |
| 2016-09-04 19:19:23 | menace | Edited notes |
| 2016-06-08 06:39:21 | menace | Added Wardog as a member of Defcon One |
| 2016-06-08 06:39:11 | menace | Edited notes |
| 2016-06-08 06:38:59 | menace | Edited nick 'Defcon One': changed differentiator to 'late 80s' |
| 2016-06-08 06:38:53 | menace | Added group 'Defcon One' |