One of the best ways to protect your online security is to have strong passwords that you change periodically. But that's easier said than done. Coming up with hard-to-guess passwords is hard enough, but it's even harder to have separate passwords for different sites and to remember new ones after you change them.

One way to create a password that's hard to guess but easy to remember is to make up a phrase. You could type in the entire phrase (some sites let you use spaces, others don't) or y...