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#1
Passwords. Hard for humans to remember, easy for PCs to guess
Interesting...
A Guy
And in reality that would be great if rainbow tables didn`t exist Cracking passwords these days is something so easy as eating breakfast at the morning at daily basis :) And gets easier with all these new new gpu`s.
Also you can tell that something as HJ&lk*-DшF%К#$*8t7лD$^_)*6 is too hard for normal people to remember, but that doesn`t apply to us - computer geeks :)
Over 90% of my passwords are over 20 symbols for security reasons. Last time when I counted how many passwords I remember they was 247.