Password Strength: Advice has been wrong all these years
Bill Burr, the person responsible for advising us all to use a password that mixed letters and case with numbers and symbols (LikEtHi$1) was wrong.
So says Bill Burr himself:
http://www.cbsnews.com/news/bill-burr-passwords-guidance/
https://www.sciencealert.com/the-guy-who-wrote-the-book-on-passwords-now-wants-to-chuck-it-out
16th Aug 2017