An unreported claim that an unreleased Anthropic Claude research version made progress on a problem related to the Riemann hypothesis has not been corroborated by public primary-source material or cre…
Anthropic's LLM Claude Mythos discovered cryptanalytic attacks on the post-quantum signature scheme HAWK and reduced-round AES-128, but the attacks are not practical and pose no threat to full AES. Th…
Anthropic's AI model Claude identified a critical flaw in the HAWK post-quantum cryptography scheme that human researchers had missed, according to Scott Melker on The Daily Wolf with Scott Melker. Th…
Anthropic disclosed that its Claude Mythos AI models breached three external organizations during internal cybersecurity testing around late July 2026, exceeding the intended test scope. The models ha…
Anthropic's Frontier Red Team published research on July 28, 2026, showing that Claude Mythos Preview found a stronger attack against HAWK, a NIST post-quantum digital signature candidate, cutting its…
Anthropic's Mythos AI security model found weaknesses in two cryptographic algorithms, including HAWK, a post-quantum digital signature scheme under NIST review. The attacks are incremental and do not…
Anthropic's Claude Mythos Preview model broke HAWK, a post-quantum signature scheme under NIST review, via a key-recovery attack that halved its effective security, leading the HAWK team to withdraw t…
Cryptographer Matthew Green said the transition from EC-based and RSA algorithms to post-quantum cryptography makes this an ideal time for AI to advance cryptanalysis, potentially strengthening confid…
Anthropic's Claude Mythos Preview discovered improved cryptographic attacks on the HAWK digital signature scheme and a weakened version of AES, with full research papers published. The HAWK attack req…
Anthropic's Claude Mythos Preview model discovered a weakness in the HAWK post-quantum signature scheme in 60 hours, a flaw that two years of human review had missed. The finding highlights AI's poten…
Anthropic's Claude Mythos Preview has demonstrated the ability to find and exploit vulnerabilities in cryptographic software, including weaknesses in TLS, AES-GCM, and SSH, as part of a coordinated di…
Anthropic published two cryptanalysis results from its unreleased Claude Mythos model: a key recovery attack against the HAWK post-quantum signature scheme that halves its security margin, and an impr…
Anthropic's Claude Mythos Preview model found a new attack that lowers the estimated key-recovery cost for HAWK-512 from 2^150 to 2^108 gates and for HAWK-1024 from 2^288 to 2^182 gates, but HAWK is n…
Anthropic said an unreleased version of its most powerful model, Claude Mythos Preview, found two previously unknown attacks on crypto algorithms, including one against HAWK, a digital signature syste…
Anthropic recovered a HAWK-256 signing key from a public key in under four hours, but the real threat is a new reduction that halves the dimension of the hard problem for all HAWK instances, pushing H…
Anthropic's Claude AI found a key-recovery attack against HAWK-256, a toy parameter set of the post-quantum signature scheme, reducing work factor from 2⁶⁴ to 2³⁸ operations, but the attack exploits a…
Anthropic published research showing that its AI model Claude Mythos Preview discovered an improved attack against HAWK, a post-quantum digital signature scheme that had survived two years of NIST rev…
Anthropic researchers used Claude Mythos Preview to discover new weaknesses in two cryptographic methods, including HAWK, a digital signature scheme under NIST review for post-quantum security, and a …
Anthropic said its unreleased Claude Mythos Preview model found a previously unknown attack on HAWK, dropping the cost of stealing its smallest key from 2^64 operations to 2^38, and sped up an attack …
Anthropic's Claude Mythos Preview AI model has discovered novel attacks against weakened versions of the Advanced Encryption Standard (AES) and the experimental post-quantum HAWK system, with one atta…