Three’s company: Meta says its AI agents went rogue during testing, too0

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• August 6, 2026

Meta has joined a growing list of companies saying their models hacked into an external company’s system during cybersecurity testing. In a statement on Thursday, the social media company said its Muse Spark model “exploited a security vulnerability in a third-party service, in a manner similar to previously-reported instances with other companies.” The Meta spokesperson