databreaches.net 3/28/2026, 11:53:56 AM · via preferred

Meet Claude Mythos: Leaked Anthropic post reveals the powerful upcoming model

MEET Claude Mythos: Leaked Anthropic post reveals the powerful upcoming model describes how an accidental leak was officially confirmed by AI company Anthropic regarding its most powerful AI model yet, Claude Mythos. The leak, originally uncovered in a Fortune report, included details about an “exclusive CEO event” and other internal assets such as PDFs and images, with nearly 3,000 assets in total that Anthropic had not previously published.

According to Anthropic, the leak stemmed from an issue with the company’s content management system, with data uploaded by the company but not marked private, leaving items stored in a publicly accessible data lake. Read more at Mashable. The post notes that the information was later corroborated by Anthropic and that the leak encompassed internal materials linked to the upcoming model.

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Article by CyberSIXT