Fast, Lean, and Accurate: Modeling Password Guessability Using Neural Networks William Melicher, Blase Ur, Sean Segreti, Saranga Komanduri, Lujo Bauer, Nicolas Christin, Lorrie Faith Cranor Guessing Methods 2 Guessing Methods ● John the Ripper ● Hashcat 3 Guessing Methods ● John the Ripper Dictionary word + Rules ● Hashcat 4 Guessing Methods ● John the Ripper Dictionary word + Rules password + append 2 digits ● Hashcat 5 Guessing Methods ● John the Ripper Dictionary word + Rules password + append 2 digits ● Hashcat password11 password12 ... 6 Guessing Methods ● John the Ripper ● Hashcat ● Markov Models 7 Guessing Methods ● John the Ripper p a s s ● Hashcat e t ● Markov Models ... 8 Guessing Methods ● John the Ripper ● Hashcat ● Markov Models ● PCFGs 9 Guessing Methods ● John the Ripper ● Hashcat L8D2 L6S2 ... ● Markov Models password12 monkey!! password11 qwerty.. ● PCFGs ... ... 10
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