# Historical Cipher Cracked by Claude Fable

Claude Fable, a cryptographer, has solved a long-standing historical cipher that had previously resisted decryption. The breakthrough was highlighted by security expert Bruce Schneier on his blog. This solution could help historians unlock the contents of once-indecipherable texts.

**Importance:** 3/5

## Sources

### Security
- [Schneier on Security](https://www.schneier.com/blog/archives/2026/09/claude-fable-solves-a-historical-cipher.html) — Wed, 09 Sep 2026 11:08:26 +0000