To make sure your online accounts are kept safe and sound most security experts advise you to routinely change your passwords. But we know you won't really change your password until one of your accounts get hacked. The downside to that approach is that you really don't know you've been hacked until it's too late. A new web app called Should I Change My Password? can eliminate the guesswork and tell if you need to—duh—change your password.
It's simple. You type in e-mail address you use for your online accounts into the search bar, the service then scans through a database with leaked account passwords and e-mails. If it spots your e-mail address it'll tell you and tell you that, yes, you should change your password.
[via Life Hacker]