Anthropic investigates unauthorized access to restricted Claude Mythos AI model

Anthropic is investigating unauthorized access to its Claude Mythos AI model by a group of users in a private online forum. The users gained access through a third-party contractor's credentials and a data breach at Mercor Inc.
Anthropic PBC is investigating unauthorized access to its Claude Mythos AI model. A group of users in a private online forum accessed Mythos on the same day Anthropic announced a limited testing release. The users gained entry through a third-party contractor's credentials and a data breach at Mercor Inc. Anthropic said there's no indication the activity extended beyond the vendor or affected its own systems. Mythos has been restricted to Project Glasswing and a preview version has been offered to select organizations, including Apple, Amazon, and Microsoft. The National Security Agency and the Commerce Department's Center for AI Standards and Innovation already have access to the model.
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