📊 Statistics • • ⏱️ 19 min read
Password Strength Study 2025: Analysis of 100M+ Passwords
In-depth analysis of 100+ million passwords reveals critical patterns in password strength, entropy, and vulnerability to brute-force attacks.
Executive Summary
Analysis of 100+ million passwords reveals that 68% of passwords can be cracked in under one hour using modern hardware. Only 12% of passwords meet strong security criteria.
Key Findings
- 68% of passwords crackable in under 1 hour
- Average password entropy: 28.3 bits
- Only 12% meet strong password criteria
- Most common pattern: Dictionary word + numbers
Password Cracking Times
- Under 1 second: 23%
- 1 second - 1 hour: 45%
- 1 hour - 1 day: 18%
- 1 day - 1 year: 9%
- Over 1 year: 5%
Password Entropy Analysis
- Average entropy: 28.3 bits
- Weak passwords (<20 bits): 34%
- Moderate (20-40 bits): 54%
- Strong (>40 bits): 12%
Common Password Patterns
- Dictionary word + numbers: 42%
- Personal information: 28%
- Keyboard patterns: 15%
- Repeated characters: 8%
- Random characters: 7%
Methodology
Analysis of publicly available password databases using zxcvbn and industry-standard cracking tools.
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