Complex Password Generator & Strength Checker

At least 12 characters for personal accounts, 16+ for financial accounts. Every additional character exponentially increases the search space. A 12-character random password takes centuries to brute-force; an 8-character one can be cracked in hours with modern GPU arrays.

Yes, absolutely. Password managers (Bitwarden, 1Password, KeePass) generate unique, strong passwords for every site and remember them for you. The only password you need to remember is your master password. Using the same password across sites is the leading cause of account breaches.

2FA requires a second form of verification beyond your password — typically a time-based one-time code (TOTP) from an app like Google Authenticator, or an SMS code. Even if your password is stolen, the attacker cannot access your account without the second factor. Enable 2FA everywhere possible, especially email and banking.

Instead of hashing passwords at attack time, attackers precompute a massive table of hashes for common passwords. If your password's hash is in the table, it is instantly 'cracked'. This is defeated by 'salting' — adding random data to each password before hashing. Modern systems (bcrypt, Argon2) do this automatically.

It depends on implementation. Biometrics (fingerprint, face) are convenient but have a critical flaw: you cannot change them if they're compromised. Most secure implementations store a local template on your device (never sent to a server) and use the password as the primary credential with biometrics as a local shortcut.