Question 1

What does the password checker evaluate?

Accepted Answer

Length is the most important factor — each additional character multiplies the brute-force search space exponentially. A 20-character password of random lowercase is stronger than a 12-character password with all character types. Combine length with variety: uppercase, lowercase, digits, and symbols.

Question 2

How is password strength calculated?

Accepted Answer

Entropy (bits) = log2(charset size ^ length). A 12-character password using all character types (94 printable ASCII) has log2(94^12) ≈ 78 bits of entropy. Modern recommendations call for at least 80–100 bits for sensitive accounts. This tool also checks against common password patterns and dictionary words.

Question 3

Why do some strong-looking passwords score low?

Accepted Answer

Passwords with predictable substitutions (P@ssw0rd, S3cur1ty!) are in attacker dictionaries as common patterns. A password's effective strength is reduced by its predictability even if it contains special characters. Truly random strings of average length beat predictable 'complex' patterns.

Verificador de fuerza de contraseña

Entrada

Fortaleza

Preguntas frecuentes