AI company Anthropic has inadvertently revealed details of an upcoming model release, an exclusive CEO event, and other internal data, including images and PDFs, in what appears to be a significant security lapse. The not-yet-public information was made accessible via the company’s content management system (CMS), which is used by Anthropic to publish information to sections of the company’s website. In total, there appeared to be close to 3,000 assets linked to Anthropic’s blog that had not previously been published to the company’s public-facing news or research sites that were nonetheless publicly-accessible in this data cache, according to Alexandre Pauwels, a cybersecurity researcher at the University of Cambridge, who Fortune asked to assess and review the material. After Fortune informed Anthropic of the issue on Thursday, the company took steps to secure the data so that it was no longer publicly-accessible. Read more: https://fortune.com/2026/03/26/anthropic-leaked-unreleased-model-exclusive-event-security-issues-cybersecurity-unsecured-data-store/ submitted by /u/fortune
Originally posted by u/fortune on r/ArtificialInteligence