How To Lock Your Social Security Number
To lock your Social Security number (SSN), you first need to either contact the Social Security Administration or use your E-Verify account to self-lock it. It is necessary to lock your SSN when you suspect that it has been stolen and used to commit fraud or identity theft. If you notice suspicious activity in your bank accounts, missing mail or mistakes in your tax returns, you might be a victim of identity theft and should lock your SSN immediately.