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Research3h ago

AI Agents Show Strong Cybersecurity Skills in New Test

The Decoder1 min brief

In brief

  • A new test created by researchers at Carnegie Mellon University has shown that AI agents can find and use real security weaknesses in Google's V8 engine, which powers browsers.
  • Among the tested models, Claude Mythos performed the best, but it costs twelve times more than GPT-5.5, which came in second.
    • This matters because as cyber threats grow, having AI that can spot vulnerabilities is crucial for keeping systems safe.
  • However, the high cost of advanced models like Claude Mythos could limit their use to large companies with big security teams.
  • For now, developers and researchers need to decide whether the benefits outweigh the costs when it comes to using these tools.
  • Looking ahead, expect more focus on making AI cybersecurity tools more affordable and accessible while ensuring they don't misuse their abilities.

Terms in this brief

Claude Mythos
A cybersecurity-focused AI agent developed by Anthropic, known for its strong performance in identifying and exploiting security vulnerabilities. Despite its effectiveness, it is significantly more expensive than other models like GPT-5.5.
GPT-5.5
A version of the GPT model, known for its capabilities in various tasks including cybersecurity. It was noted to be a cost-effective option compared to Claude Mythos, placing it second in performance during the Carnegie Mellon University test.

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