"Here is an informative article on what to do if your passwords are ever breached," Jim Hamm gets our attention. "Also, there's a discussion on some Password Managers and several sites to check the strength of your passwords. If you do some testing don't use your actual passwords — use ones that are similar in length and complexity.
Jim explains, "Although the author, Fred Langa, writes for Windows users, this article applies to Macs as well."