Meta AI Muse faces privacy controversy after user Jason Aten claimed it accessed macOS notification content without explicit permission. Aten reported Muse answering questions based on message previews despite not granting access. Meta executive David Singleton countered that Muse requires manual activation of Full Disk Access and does not monitor notifications, asserting data is only collected after explicit user authorization. The discrepancy between Muse's reported behavior and Meta's official stance remains under investigation, highlighting potential permission vulnerabilities in the AI assistant's macOS integration.