Those calls to change your password every month, or to add extra characters, really don't work. don’t work. And no matter what you do, your systems are less secure than you and your system administrator think they are. Little wonder that Sony, the Pentagon... and you... are easy targets. If you're using Web-collaboration CAD or BIM tools, you may want to re-think your password policies.
I’ll explain why, and what you can do to come close to maximum password security, with minimum effort. The single most important rule is to never reuse passwords. But there's more to the story than that.