Tutorvo

Guesses per Second & Time to Crack: Online vs Offline

Lesson 4 of 815 minLab

This lesson is part of the course

In this lesson

You compute the average number of guesses for four random passwords and turn them into years under four illustrative attack speeds with one mixed-reference formula, then count the cases that fall within a year.

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Lessons in this course

  1. Character Sets & Search Space: N^LLab13 min Locked
  2. Entropy in Bits: L × log2(N) and a Rating TableLab14 min Locked
  3. Passphrases: Diceware-Style Word Lists & Bits per WordLab13 min Locked
  4. Guesses per Second & Time to Crack: Online vs OfflineLab15 min Locked
  5. Length vs Complexity: An Entropy Grid & Line ChartLab15 min Locked
  6. Policy Design: Length, Blocklists & MFA ComparedLab16 min Locked
  7. Password Reuse: 1 − (1 − p)^N Across SitesLab14 min Locked
  8. Lockouts & MFA: Capping Online GuessesLab15 min Locked