r/cissp
ActiveCISSP - 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/
Members
76,335
as of February 2025
Last post
Unknown
Posts (30 days)
—
Created
2011
March 30, 2011
Total posts
27.0K
archived
Total comments
267.6K
archived
Is r/cissp dead? Active community.
r/cissp is posting regularly. Active subreddits can't be requested through r/redditrequest.
Find abandoned subreddits in this niche you can claim →r/cissp activity over the last year
New posts per month.
Frequently asked questions about r/cissp
How many members does r/cissp have?
r/cissp had 76,335 members as of February 2025, the most recent archive crawl of its subscriber count.
When was r/cissp created?
r/cissp was created on March 30, 2011.
Can I take over r/cissp?
Probably not. r/cissp is still in active use, and Reddit only hands over communities whose human moderators have all gone inactive on Reddit for 60+ days. If you want a community in this niche, look for abandoned subreddits on the same topic instead — DeadSubs finds them automatically.
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Activity checked November 12, 2026from the Arctic Shift Reddit archive. Member counts come from the archive's most recent crawl and may lag Reddit. DeadSubs is not affiliated with Reddit Inc.