BragJack: Comet browser AI agent reading files outside its sandbox profile

Arnold Chan@slaz

•updated Sep 17, 2026•0•0•2

Detects the 'Comet.exe' process, associated with the Perplexity Comet AI agent, accessing sensitive system files or configuration directories outside its expected scope. This pattern of file interaction is characteristic of unauthorized data collection or exfiltration attempts, specifically linked to the BragJack threat activity.