How does MFA protect against phishing and credential theft?

Standard MFA that relies on a password plus a basic one-time code can still be undermined by real-time phishing kits that relay both values from a fake login page to the real service before the code expires.

Why phishing-resistant MFA closes this specific gap:

• Domain-bound authentication: Certificate-based and FIDO/WebAuthn methods cryptographically bind the authentication attempt to the legitimate service's actual domain.
• No transferable secret: Because there is no code or password to read off a screen and retype elsewhere, an attacker's fake site has nothing usable to relay.
• Immediate attacker exposure: Attempting to relay a FIDO authentication challenge to the wrong domain simply fails, rather than silently succeeding for the attacker.
• Reduced credential value: Stolen certificates or FIDO keys are far harder to exfiltrate or reuse than a typed password or numeric code.

Cryptas Strong Authentication is built specifically around these certificate-based and FIDO methods precisely because they close the gap that password-plus-code MFA still leaves open against sophisticated, real-time phishing.