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We present a novel attack named "Authenticator Rebinding Attack," which aims at the Fast IDentity Online (FIDO) Universal Authentication Framework (UAF) protocol implemented on mobile devices. The presented Authenticator Rebinding Attack rebinds the victim's identity to the attacker's authenticator rather than the victim's authenticator being verified by the service in the UAF protocol, allowing the attacker to bypass the UAF protocol local authentication mechanism by imitating the victim todoi:10.1155/2020/8819790 fatcat:k3dz4opd5ngorfpqzclpgutksm