Cybersecurity Dive: What is phishing-resistant multifactor authentication? It’s complicated.

Multifactor authentication can bear weaknesses that render its efficacy moot. A common response and answer to the most problematic forms of MFA, though the details are limited at best, is phishing-resistant MFA.

The qualifier, phishing resistant, is broadly defined as modes of authentication that rely on cryptographic techniques, such as an asymmetric pair of private and public keys, the Web Authentication API (WebAuthn) specification, biometrics or the FIDO2 standard.