Some of the things you can do to be diligent to protect yourself—and let me explain that you can’t always protect yourself, but you certainly can put yourself in a better position—include updating passwords regularly. If you have software that requires two-factor authentication, you should make sure you’re actually using it. You should be updating your software, and you should have a credit monitoring system at all times, like LifeLock, where you’re getting alerts if something happens. You should be getting alerts from your bank for any sort of transaction, which you can set up online.
If you do get an alert that your information was part of a data breach, you should immediately change your passwords for everything you have, contact your bank to make sure they’re aware of it, and take a look at your credit report. If you have a service like LifeLock, you can immediately freeze your credit, meaning that nobody can make inquiries or open any new accounts in your name.