webauthn passkey audit forensic analyzer — free browser tool | fatcousin

drop webauthn registration + assertion log · parse authenticator data + counter

input

drop webauthn audit log json or csv

browser export · relying party audit · multiple files merged

Select file

flags signCount rollback/reuse · uv=false on sensitive ops · cross-rpId credential reuse hints

limits

heuristic screener · log schema varies by rp export — field mapping is best-effort · not definitive proof

status

>ready