Definition
Privileged AI agents are assistant systems granted broad OS-level access — files, microphone, camera, location, calendar, and cross-device control — to perform autonomous tasks on behalf of users. Security failures in these agents amplify compromise blast radius.
Key Points
- 2026-09-21: muse zero-day — any local process can redirect cloud transcription endpoint and hijack authentication token; compromised agent inherits full user-granted permissions (2026-09-21-meta-muse-zero-day-vulnerability)
- Cross-device reach: compromised Muse session can query linked iPhone location, Bluetooth scan, contacts
- Design tension: broad permissions required for agent utility vs. least-privilege security principles
- Amazon blocked Muse from shopping on amazon.com (Sep 2026) as secondary signal