1. Set up mobile alerts for your phone if your financial institution provides the feature. That way, you can be aware of unusual activity as quickly as possible.
2. Regularly monitor your accounts online, so you can identify fraudulent transactions faster, says Schultz.
3. Avoid public computers. Don't log onto your email if your bank corresponds with you there. Urban suggests setting up an email account just for your finances and checking it from safe locations.
4. Avoid doing business with unfamiliar online vendors, Noonan says. Stick to established merchants and websites.
5. If your information has been compromised, notify your financial institutions and local law enforcement, which will contact the Secret Service if necessary. Also notify any of the three major credit reporting agencies -- Experian, Equifax and TransUnion -- to set up a fraud alert on your credit reports.