r/blueteamsec
BorderlineFor [Blue|Purple] Teams in Cyber Defence
We focus on technical intelligence, research and engineering to help operational [blue|purple] teams defend their estates and have awareness of the world.
Members
49,930
as of February 2025
Last post
1 month ago
September 25, 2026
Posts (30 days)
100+
Created
2018
January 29, 2018
Total posts
28.5K
archived
Total comments
16.6K
archived
Is r/blueteamsec dead? Activity is slowing.
No posts in 47 days. That's not long enough to be considered abandoned yet — communities usually need 60+ days of inactivity (and inactive moderators) before Reddit will hand them over.
Find abandoned subreddits in this niche you can claim →Frequently asked questions about r/blueteamsec
How many members does r/blueteamsec have?
r/blueteamsec had 49,930 members as of February 2025, the most recent archive crawl of its subscriber count.
Is r/blueteamsec dead?
r/blueteamsec looks quiet: its most recent post was 1 month ago (47 days). Post activity is a strong signal, but whether a subreddit can be claimed depends on its moderators being inactive across all of Reddit.
When was r/blueteamsec created?
r/blueteamsec was created on January 29, 2018.
Can I take over r/blueteamsec?
Probably not. r/blueteamsec 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.
Subreddits similar to r/blueteamsec
Featured in
Want your own subreddit with a built-in audience?
Thousands of subreddits like r/blueteamsec have been abandoned by their moderators. DeadSubs finds the ones you can claim.
Activity checked November 11, 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.