Auth & Client-Side Security
low Severity
Free Check
Multi-Factor Authentication (MFA) Support
Checks whether account portals support two-factor authentication (TOTP, WebAuthn/Passkeys, or SMS).
Why It Matters
MFA blocks 99.9% of automated account takeover attacks even when passwords have been compromised in third-party data breaches.
How We Check This
We inspect account settings and authentication flows for MFA enrollment options and WebAuthn API support.
How to Fix & Implement
Copy-paste configuration blocks tailored for your web server or edge proxy.
nginx snippet
Integrate WebAuthn or TOTP (speakeasy, otplib) in your authentication service
Frequently Asked Questions
Are Passkeys more secure than SMS 2FA?
Yes! Passkeys (FIDO2/WebAuthn) are cryptographically bound to the domain and completely immune to phishing.