While this is a couple of months old I thought I would share this anyway as I thought this was a really neat feature.
If you use LastPass as your password manager across your browsers you can execute a check of your account credentials through use of the LastPass Security Challenge. It will scan all of the credentials for breaches against known lists and alert you if there are any problems that require attention. This would be as straightforward as changing the password for the affected service and you could use the handy random password generator within LastPass to finish the job.
It can be hard to keep track of security breaches particularly when individual services may be coy or mute when it comes to owning up to a security incident so it is a good idea to check every so often.