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vulnerabilities
Here’s what Anthropic found when it turned Mythos loose on encryption algorithms
Anthropic researchers used Claude Mythos to discover weaknesses in two cryptographic algorithms: a lattice-based digital signature scheme called HAWK under consideration by the National Institute of Standards and Technology for post-quantum cryptography, and a theoretical attack on a simplified version of the Advanced Encryption Standard. The company emphasized that neither flaw affects currently deployed systems and followed standard disclosure practices with relevant stakeholders.
Why it matters: Organizations relying on cryptographic systems should monitor NIST's evaluation process and assess their post-quantum cryptography readiness, particularly those handling sensitive data that must remain secure against future quantum threats and AI-assisted attacks.
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vulnerabilities
Here’s what Anthropic found when it turned Mythos loose on encryption algorithms
Anthropic researchers used Claude Mythos Preview to discover weaknesses in two cryptographic methods: a nontrivial automorphism in HAWK, a lattice-based digital signature scheme under NIST review for post-quantum cryptography, and a mathematical shortcut called the Möbius Bridge in a theoretical seven-round version of AES. The company emphasized that neither flaw affects production systems, as HAWK would require doubled key sizes to maintain security and the AES attack requires an impractical volume of data to execute against the full 10-round encryption used in practice.
Why it matters: Organizations evaluating post-quantum cryptography candidates should monitor NIST's response to the HAWK findings; security teams must ensure visibility into where cryptography is deployed and develop PQC readiness plans before quantum threats materialize.
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- First seen by Cybersecurity Tracker