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Threats to passwords are still very relevant due to attacks like phishing orcredential stuffing. One way to solve this problem is to remove passwordscompletely. User studies on passwordless FIDO2 authentication using securitytokens demonstrated the potential to replace passwords. However, widespreadacceptance of FIDO2 depends, among other things, on how user accounts can berecovered when the security token becomes permanently unavailable. For thisreason, we provide a heuristic evaluation of 12 account recovery mechanismsregarding their properties for FIDO2 passwordless authentication. Our resultsshow that the currently used methods have many drawbacks. Some even rely onpasswords, taking passwordless authentication ad absurdum. Still, ourevaluation identifies promising account recovery solutions and providesrecommendations for further studies.

Evaluation of Account Recovery Strategies with FIDO2-based Passwordless Authentication