Password Reuse: 1 − (1 − p)^N Across Sites
This lesson is part of the course
In this lesson
You compute the chance that a reused password leaks from at least one of six sites, build a table for 1 to 20 sites, chart it and extend it to several years.
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Lessons in this course
- Character Sets & Search Space: N^L Locked
- Entropy in Bits: L × log2(N) and a Rating Table Locked
- Passphrases: Diceware-Style Word Lists & Bits per Word Locked
- Guesses per Second & Time to Crack: Online vs Offline Locked
- Length vs Complexity: An Entropy Grid & Line Chart Locked
- Policy Design: Length, Blocklists & MFA Compared Locked
- Password Reuse: 1 − (1 − p)^N Across Sites Locked
- Lockouts & MFA: Capping Online Guesses Locked