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Analyzing a Strong Password

See how a high-entropy passphrase scores against dictionary attacks and brute force time estimation. Analyze password strength with real-world attack models.

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Analyzing a Strong Password

This example demonstrates the XKCD passphrase approach: four random words joined by hyphens. Despite having no uppercase letters, digits, or special characters, it scores high because of its length and entropy.

What You Will See

How to Use

  1. The passphrase “correct-horse-battery-staple” is pre-filled
  2. Compare the crack time estimates to the weak password example
  3. Notice how entropy increases with each additional word
  4. Try removing words to see how the score drops (3 words is weaker, 5 words is stronger)
  5. This passphrase does not appear in any known breach database
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