# Anthropic says its Mythos model found vulnerabilities in cryptographic algorithms that secure the internet

> Source: <https://the-decoder.com/anthropic-says-its-mythos-model-found-vulnerabilities-in-cryptographic-algorithms-that-secure-the-internet/>
> Published: 2026-07-28 19:12:27+00:00

Anthropic's Claude Mythos Preview found weaknesses in key cryptographic algorithms, including a better attack on HAWK, a post-quantum signature scheme that human experts had reviewed for more than two years. The model found it in just 60 hours at an API cost of about $100,000. The findings don't affect systems in use today, but they show how AI could challenge core assumptions behind internet security, Anthropic says.

The article [Anthropic says its Mythos model found vulnerabilities in cryptographic algorithms that secure the internet](https://the-decoder.com/anthropic-says-its-mythos-model-found-vulnerabilities-in-cryptographic-algorithms-that-secure-the-internet/) appeared first on [The Decoder](https://the-decoder.com).