r/crypto↗
Cryptography news and discussions
Cryptography is the art of creating mathematical assurances for who can do what with data, including but not limited to encryption of messages such that only the key-holder can read it. Cryptography lives at an intersection of math and computer science. This is a technical subreddit covering the theory and practice of modern and *strong* cryptography.
348k subscribers28 posts / mo in Sep 202617 authors / mosince 2008
r/crypto has 348k members (+4.2% over the last 12 months). It gets about 28 posts a month from 17 people. Top topics: Crypto Humor and Trends, GmailPrivacyAndSecurity and Encrypted Messaging Apps.
When to post on r/crypto
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How r/crypto has grown
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Monthly activity
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Topics and brands on r/crypto
Top topics
Share of the subreddit's posts
- Crypto Humor and Trends1.1%
- GmailPrivacyAndSecurity0.8%
- Encrypted Messaging Apps0.7%
- Password Managers0.6%
- ProtonMail Apps & Email0.5%
Brands people mention
Most-mentioned brands and sites, last 12 months
Posting rules for r/crypto
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How often posts get removed on r/crypto
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What works on r/crypto
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Who posts on r/crypto
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What people ask for on r/crypto
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See all of r/crypto
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research