Equifax, a company that provides credit scores, said on Thursday that the personal information of 143 million people may have been accessed by hackers.
The details potentially accessed by hackers between mid-May and July include names, social security numbers, some credit card numbers and personal documents.
Equifax set up a site, equifaxsecurity2017.com, to help you find out whether your information was compromised.
Once there, you can click to check your potential impact.
Equifax
The page will then ask for your last name and the last 6 digits of your social security number.
Equifax
Once that's done, Equifax will send a message letting you know if your information was part of the hack.