r/securityCTF↗
SecurityCTF : CTF announcements & writeups
64k subscribers112 posts / mo in Sep 202686 authors / mosince 2012
r/securityCTF has 64k members (+17% over the last 12 months). It gets about 112 posts a month from 86 people. Top topics: Capture the Flag Mode, Pentesting Guides & Tips and Windows Security Exploits.
When to post on r/securityCTF
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How r/securityCTF has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/securityCTF
Top topics
Share of the subreddit's posts
- Capture the Flag Mode1.3%
- Pentesting Guides & Tips0.7%
- Windows Security Exploits0.6%
- Linux Security Vulnerabilities0.5%
- Hacking Conferences0.2%
Brands people mention
Most-mentioned brands and sites, last 12 months
- CTFtime
- Medium
- Vercel Security Checkpoint
- Hack The Box
Everything else about r/securityCTF
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research