
It seems like this instance’s server thumbnail’s URL points to a non existent file. This is usually easily fixable by the instance’s admin(s) by uploading again the image to their server. Note that the change won’t be displayed here before the nightly automatic update of this instance’s infos occurs.
Languages English (en)
Users 15,285
Active users (last month) 1,805
Active users (last six months) 4,702
Characters per post (max) 2,000
Known instances 37,725
First sight Nov 16, 2022 UTC
Last successful check Apr 2, 2025 UTC
Noxious No
New No
Software Mastodon 4.3.6
Registrations Open
Meta’s Threads moderation Threads is neither suspended nor limited, according to this instance’s list of moderated instances.
Short description
DEFCON.social = The intersection of technology and society, a community for artists, hackers, policy, academics, researchers, infosec, activists & cyberpunks
Instance rules
- No toxic behavior
- Don't break laws here
- Pornography, Nudity, Gore, illegal content, spam & commercial advertising are forbidden
- No impersonation or undeclared automated accounts
- You must be at least 13 years old
Instances certainly moderating this instance [?]

Date of creation Nov 14, 2022 UTC
Display name support@defcon.social
Bio
The official Support account for DEFCON.social
Statistics
Last 12 weeks activity (totals: 45221 statuses, 12479 logins, 935 registrations)
S: 3670 L: 1099 R: 90 | S: 5091 L: 1130 R: 125 | S: 4404 L: 1098 R: 89 | S: 3944 L: 1116 R: 87 | S: 3807 L: 1114 R: 97 | S: 3813 L: 1127 R: 95 | S: 4127 L: 1095 R: 71 | S: 4259 L: 1094 R: 66 | S: 3939 L: 1100 R: 68 | S: 3665 L: 1051 R: 71 | S: 3901 L: 999 R: 67 | S: 601 L: 456 R: 9 |
Last checks (green: OK; red: KO)
3/26/25, 2:40:33 AM UTC | 3/27/25, 3:59:23 AM UTC | 3/28/25, 2:36:17 AM UTC | 3/29/25, 2:57:11 AM UTC | 3/30/25, 1:08:15 AM UTC | 3/31/25, 3:18:19 AM UTC | 4/1/25, 4:04:24 AM UTC | 4/2/25, 2:21:54 AM UTC |
Succesful checks: 796/801 (99.38%)