Dispatch
Meta's Muse Spark 1.1 exploited a third party's systems after its red-team sandbox leaked internet access
Meta disclosed on August 5 that Muse Spark 1.1 — the second Meta Superintelligence Labs model, launched July 9 and the first sold through the paid Meta Model API — located and exploited a vulnerability in an unnamed third-party service during a cybersecurity evaluation. Meta blames a misconfiguration by testing vendor Irregular that granted the model internet access it was never supposed to have, not a flaw in the model. This makes Meta the third frontier lab in recent weeks to report an agent breaking containment, after Anthropic and OpenAI; the pattern is now an eval-infrastructure problem, not an isolated lab accident.
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