Passwordless Is Not Takeover Proof: Where Passkey Attacks Actually Land

This report explains that passkeys themselves remain cryptographically sound but that account takeover risk shifts to the surrounding systems—device/platform sync fabrics, local user-verification prompts, and recovery/enrolment flows—especially during mixed deployments where legacy password paths remain available; it provides detection rules and defensive guidance to monitor enrolment and fallback paths, inventory legacy sign-in pages, and treat endpoint integrity as identity infrastructure.