AI Matters
Why it matters
Anthropic's Claude found new weaknesses in internet encryption
The Decoder Anthropic says its Mythos model found vulnerabilities in cryptographic algorithms that secure the internet
Anthropic said its Claude Mythos Preview model found weaknesses in cryptographic algorithms, including one in a post-quantum scheme, in 60 hours for about $100,000.
Why it matters
The model found flaws in cryptography that secures online communication, far faster and cheaper than expert review.
Latest brief · Jul 29, 2026