Orgs
| 2600 | https://www.2600.com |
| Chaos Computer Club | https://www.ccc.de/en/ |
| L0pht | https://l0pht.com/ |
Tools
| Nmap | https://insecure.org/ |
| Metasploit | https://metasploit.com/ |
| Wireshark | https://www.wireshark.org/ |
| Snort | https://www.snort.org/ |
| Password Generator | https://www.lastpass.com/features/password-generator |
Conferences
| Hope | https://hope.net/ |
| Defcon | https://www.defcon.org/ |
| Thotcon | https://www.thotcon.org/ |
| GrrCon | https://grrcon.com/ |