One of the oldest rules about passwords is totally wrong

Your school or workplace may require you to change your password every couple months or so to keep your account safe. It’s a widely-implemented security recommendation.
Except it’s totally wrong.
The Federal Trade Commission’s chief technologist, Lorrie Cranor, busted that myth earlier this week, at a security conference in Las Vegas.
Turns out, requiring periodic password changes could end up making your password less secure. The reason is that when most people are requi