More than 143 million Americans have had their personal information exposed in the Equifax hack.
The most prudent action is to freeze your files. These are the sites to do this.
https://www.freeze.equifax.com/Freeze/jsp/SFF_PersonalIDInfo.jsp
https://www.experian.com/freeze/center.html
https://www.transunion.com/credit-freeze/place-credit-freeze
The FTC also suggests
Verifying your info using the annual credit report.
Filing taxes early.