I think it goes back to my high school days. In computer class the first assignment was to write a program to print the first 100 Fibonacci numbers. Instead I wrote a program that would steal passwords of students. My teacher gave me an A.
Treat your password like your toothbrush. Don't let anybody else use it and get a new one every six months.
If there are men in this country big enough to own the government of the United States they are going to own it.