27 Best Cybersecurity Communities
as of July 2026 · Ethical hacking, penetration testing, security engineering, privacy, and cyber threat intelligence.
r/netsec
Technical-focused security subreddit with 450k members sharing research, vulnerabilities, and tools.
OWASP Community Slack
OWASP's 25k+ member Slack community focused on application security standards and best practices.
Cyber Defends
95k-member Telegram channel delivering daily cybersecurity news, vulnerabilities, and threat alerts.
SecurityFocus Community
Established forum with 50k members for vulnerability and threat intelligence.
OWASP Community
OWASP's official Slack for application security and web vulnerability discussions.
r/HomeServer
Home lab and server security community with 180k members.
Cybersecurity Discord
Real-time cybersecurity Discord with 45k members, certifications, and networking.
Hack The Box Community
500k+ member cybersecurity learning community with hands-on labs, CTF, and job opportunities.
CyberDefenders
Interactive platform with 75k members for defense training and challenges.