r/cryptography↗
For people interested in the mathematical and theoretical side of modern cryptography.
98k subscribers145 posts / mo in Sep 2026 (incl. ~1% by known bots)122 authors / mosince 2008
r/cryptography has 98k members (+15% over the last 12 months). It gets about 145 posts a month from 122 people. Top topics: Crypto Humor and Trends, Encrypted Messaging Apps and GmailPrivacyAndSecurity.
When to post on r/cryptography
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How r/cryptography has grown
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Topics and brands on r/cryptography
Top topics
Share of the subreddit's posts
- Crypto Humor and Trends1.0%
- Encrypted Messaging Apps0.6%
- GmailPrivacyAndSecurity0.5%
- ProtonMail Apps & Email0.4%
- Password Managers0.4%
Brands people mention
Most-mentioned brands and sites, last 12 months
Posting rules for r/cryptography
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Who posts on r/cryptography
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Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research