Ken Thompson's Unix Password
Back when I worked in IT many years ago, one of the things I did each week was run JohnTheRipper on our password file.  If it cracked your password, it sent you an email saying your password was weak and you had to change it.<p>If you were in the next week&#x27;s batch, it emailed you and told you &quot;your password is foobar, which we discovered by cracking the password file, and it is weak.  You must change it&quot;.  Yes, I emailed them their password in plain text using our internal email system.  Jury&#x27;s still out on whether that was a good idea. :)<p>The next week we just disabled your account and you had to come to IT to fix it.<p>One guy actually got fired for his password.  He was already being super creepy and making the girl who sat across from him uncomfortable, but she never told anyone.  Then we cracked his password, which was a very naughty phrase about the girl who sat across from him. I reported it to HR, who asked the girl, who then said he was creepy, and so they acted swiftly on the reports and got him out of there.