Perhaps also not a bad idea to request an IRS identity protection PIN to prevent someone from filing a false tax return in your name. They issue a new PIN every year and you have to enter it into the software when you e-file your taxes.
Supposedly the multi-factor authentication app the IRS uses, ID.me, will also work with Social Security, though I have not used it for that purpose yet and I don't know how it overlaps with login.gov.