Cyber AI Digest
  1. Anthropic Frontier Red Team Oct 20, 2026
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    News

    Claude found 493 attack surface issues in 25 open source projects.

    • The analysis covered more than five million lines of code written notably in C, C++, Java, PHP and Python.

    • The eleven projects with authenticated access all had code reachable unintentionally.

    • In 94 cases, a combination of options silently disabled a security control.

    • In OpenSSH 10.4, about 4,500 lines of ML-DSA-44 code were reachable without authentication by default.

    Read the original article Using Claude to reduce the attack surface of code anthropic.com