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 from mid-May to 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. You can also access the site via Equifax's homepage, and if you'd rather call, there's also a phone line dedicated to the breach: 866-447-7559.

Once there, you can click to check your potential impact.

The page will then ask for your last name and the last 6 digits of your Social Security number.

Equifax says it will send a message letting you know whether your information was part of the hack.

Some readers have pointed out that the site isn't working for them or didn't send them a message. Equifax said in a statement Friday night that the bug had been resolved.

Here's what the page looked like if your information was likely part of the group that was compromised.

Some users have pointed out the arbitration clause on the company's terms of service page, which means that people who use the site waive their rights to a class-action lawsuit. At least one lawsuit has been filed against the company regarding the breach. Equifax said in a statement Friday night that the arbitration waiver — written in the site's terms of service — didn't apply to the cybersecurity attack.