author = 	 {Patrick Gage Kelley and Saranga Komanduri and Michelle L. Mazurek and Rich Shay and Tim Vidas and Lujo Bauer and Nicolas Christin and Lorrie Faith Cranor and Julio Lopez},
  title = 	 {Guess again (and again and again: {M}easuring password strength by simulating password-cracking    algorithms},
  institution =  {CyLab, Carnegie Mellon University},
  year = 	 {2011},
  number = 	 {CMU-CYLAB-11-008},
  url =          {https://www.cylab.cmu.edu/research/techreports/2011/tr_cylab11008.html},
  month = 	 aug,
  keywords =     {passwords},