Apple changed macOS full-disk access permissions after Meta's Muse agent referenced a user's Messages thread, according to the source report.
The change tightens what an AI agent with broad file access can see on a Mac.
Source: arstechnica.com, reported 10-02. https://arstechnica.com/security/2026/10/apple-changes-full-disk-access-permissions-to-curb-abuse-from-ai-agents/