Why this topic matters
Identity abuse often begins with artifacts that already exist: session cookies, refresh tokens, device-bound tokens, browser state or cached app credentials. The challenge is not always stealing them; it is understanding where replay still works and where policy starts to care.
Operator checks
- Map which tokens are bearer-like and which are constrained by audience, device or session context.
- Check whether refresh flows or legacy clients weaken otherwise strong policy boundaries.
- Watch how session revocation, device compliance and risk-based prompts really behave after theft.
- Treat browser extensions, local storage, crash dumps and endpoint tooling as token-adjacent surfaces.
Reporting lens
Write findings in terms of trust crossed, scope enlarged and business or operational effect reached. That keeps the note useful whether you are validating a lab, an internal research target or a live customer environment.
Curated public references
- Microsoft Learn ยท Token BasicsToken types and platform semantics.
- OAuth 2.0 BCPModern token-security considerations.
- PortSwigger OAuth authenticationAttack patterns around OAuth deployments.