Communities related to r/cybersecurity, with what each one is for and how it differs. Member figures come from SubMouse's safe-for-work directory.
r/cybersecurity (about 1.6M members, directory rank #680) is for technical professionals discussing cybersecurity news, research and threats. Personal privacy habits, hacking culture and systems administration each fit better for adjacent goals.
Stay on cybersecurity for professional security practice. Use privacy for personal privacy, hacking for hacker culture and learning exploits, and sysadmin for operations and infrastructure.
r/cybersecurity — cybersecurity
This subreddit is for technical professionals to discuss cybersecurity news, research, threats, etc.
Privacy in the digital age
When to choose it: Personal digital privacy rather than enterprise security.
Why it is here: Public description: privacy in the digital age (about 1.7M members, rank #633).
How it differs from r/cybersecurity: Personal privacy versus professional cybersecurity.
hacking: security in practice
When to choose it: Hacker culture and exploit learning.
Why it is here: Public description: hacking and hackers (about 3.0M members, rank #363).
How it differs from r/cybersecurity: Hacking culture versus cybersecurity profession framing.
Sysadmin
When to choose it: Systems administration and infrastructure ops.
Why it is here: Sysadmin community neighbouring security operations.
How it differs from r/cybersecurity: Ops/admin remit versus security research focus.
Use the related subreddits finder for r/cybersecurity: Find related to r/cybersecurity.
Members and public descriptions come from SubMouse's safe-for-work directory (as of 2026-11-09 UTC); 7-day growth measured from 2026-11-02. Directory rank is listing order. Guide updated 2026-11-07.