Why Passwordless Authentication Alone Isn't Enough: Securing Authentication Flows Through Code Reviews
MojoAuth, Friday, June 26th, 2026
Passwordless methods reduce risk but still require rigorous code reviews and secure implementation to avoid flaws.
Passwordless methods like passkeys and magic links eliminate traditional password vulnerabilities but do not guarantee security if poorly implemented.
Developers frequently introduce gaps through weak token generation, insufficient rate limiting, and missing expiration logic in OTP and magic-link flows.
Post-authentication session management is equally critical, since session fixation, improper logout, and insecure storage can let attackers hijack accounts.
Professional code reviews and security audits help surface hidden flaws before production.
Organizations should verify rate limiting, strong cryptographic tokens, and secure session handling via a pre-launch checklist.