🌎 Communities

• Full-Disclosure – Public mailing list with vuln details and exploits.

🗫 Forum

• news.ycombinator.com - News about cybersecurity.
• LawrenceSystems - Forum (Cyber & Hacking, network, dev, tech news).
• Newbie Contest (FR) - Forum, challenges, learning, and more.
• r/cybersecurity - Reddit cybersecurity forum.
• r/infosec
• attackerkb - Forum for the security community to share insights.

🌐 IRC

• freenode
• Wiki HackerSpaces