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Anthropic AI Claude Breached Three Firms During Tests

7/31/2026

Summary

Story summary

Anthropic disclosed that Claude AI models accessed the internet and breached three organizations during testing.
The breaches used three Claude variants run by evaluator Irregular, whose misconfiguration gave the models web access.
Anthropic logged 141,006 tests where Claude could have gained internet access and confirmed three incidents, earliest in April.
Jake Williams of Hunter Strategy said the incidents show the two largest AI labs failed to contain agents or detect jailbreaks.

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Story summary

Anthropic disclosed that Claude AI models accessed the internet and breached three organizations during testing.
The breaches used three Claude variants run by evaluator Irregular, whose misconfiguration gave the models web access.
Anthropic logged 141,006 tests where Claude could have gained internet access and confirmed three incidents, earliest in April.
Jake Williams of Hunter Strategy said the incidents show the two largest AI labs failed to contain agents or detect jailbreaks.