Check your credit reports.

You can order a free copy of your credit report from all three of the credit reporting agencies at www.annualcreditreport.com. You are entitled to one free report from each of the credit bureaus once per year. This includes Equifax, Experian and TransUnion. 

Monitor your bank accounts.

Monitoring your accounts and credit report for unauthorized transactions is critically important. Use online and mobile banking to keep a close eye on your accounts. 

Update your computers and mobile devices.

Having the latest security software, web browser and operating system are the best defenses against viruses, malware and other online threats. Turn on automatic updates so you receive the newest fixes as they become available.

Set strong passwords.

A strong password should be at least eight characters that include a combination of upper and lowercase letters, numbers and special characters. Avoid obvious passwords like birthdays, addresses or phone numbers.

Secure your internet connection.
Always protect your home wireless network with a password. If you want to use your phone to conduct sensitive transactions, use a secure wireless network or your phone's data network.
Watch out for phishing scams.
Phishing scams can be found in fraudulent emails and websites to trick users into disclosing private account or login information. Do not click on links or open any attachments or pop-up screens from sources you are not familiar with. 
Keep personal information personal.

Social media profiles can be used to figure out passwords and answer security questions in the password reset tools. Control your privacy settings and avoid posting things like birthdays, addresses, mother’s maiden name, etc. Be wary of requests to connect from people you do not know.