Zfly.site Login [ 100% Verified ]

Always use HTTPS (TLS) for all auth endpoints.
Store passwords hashed with a strong algorithm (argon2, bcrypt, scrypt) and unique salts.
Use secure, HttpOnly, Secure, SameSite=strict cookies for session tokens when using cookie-based sessions.
For token storage in SPAs, prefer in-memory storage for access tokens and http-only cookies for refresh tokens where feasible.
Implement short-lived access tokens and rotate refresh tokens.
Enforce rate limiting and account lockout thresholds to mitigate brute-force attacks.
Use multi-factor authentication for higher-risk accounts.
Validate and sanitize inputs to prevent injection attacks.
Protect against CSRF: use SameSite cookies, anti-CSRF tokens, or double-submit cookie patterns.
Log authentication events (success/failure) with timestamps and IP addresses; retain logs securely.
Implement secure session invalidation on logout and password change.