r/Pentesting↗
Penetration testing (or pen testing) is a security exercise where a cyber-security expert attempts to find and exploit vulnerabilities in a computer system. The purpose of this simulated attack is to identify any weak spots in a system's defenses which attackers could take advantage of.
90k subscribers221 posts / mo in Sep 2026 (incl. <1% by known bots)167 authors / mosince 2012
r/Pentesting has 90k members (+36% over the last 12 months). It gets about 221 posts a month from 167 people. Top topics: Pentesting Guides & Tips, Cybersecurity Career Navigation and Browser Privacy & Security.
When to post on r/Pentesting
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How r/Pentesting has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/Pentesting
Top topics
Share of the subreddit's posts
- Pentesting Guides & Tips29%
- Cybersecurity Career Navigation0.5%
- Browser Privacy & Security0.5%
- WiFi Security & Hacks0.5%
- Linux Security Vulnerabilities0.4%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Medium
- Vercel Security Checkpoint
- OWASP Foundation
- Hack The Box
- PortSwigger
Everything else about r/Pentesting
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