r/cissp↗
CISSP - Certified Information System Security Professional
This sub is for those that are pursuing the CISSP® and those that have taken the exam and wish to provide feedback on the study methodology and materials employed. This sub is not supported or managed by ISC2 or its affiliates. This is an unofficial CISSP® Reddit sub. Information about experience requirements/endorsement/CPEs can be found at https://www.isc2.org/
97k subscribers201 posts / mo in Sep 2026161 authors / mosince 2011
r/cissp has 97k members (+13% over the last 12 months). It gets about 201 posts a month from 161 people. Top topics: CISSP Passes, Passed Exams and Cybersecurity Exam Passes.
When to post on r/cissp
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How r/cissp has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/cissp
Top topics
Share of the subreddit's posts
- CISSP Passes20%
- Passed Exams17%
- Cybersecurity Exam Passes11%
- Certification Passes & Next Steps5.3%
- Failed Exams3.1%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Buymeacoffee
- Substack
- Wiley
- Apple
Everything else about r/cissp
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