The IRS got hacked. Again.→
To protect the victims of the data breach from further harm, the IRS provided them with “Identity Protection PINs.” The PINs are secret codes those taxpayers now have to put on all of their tax returns, or the IRS won’t accept them. As long as they keep their PINs secret, they should be safe from fraud.
For this master plan to work, though, the IRS would also have to keep the PINs secret. Unfortunately, it seems the agency is having some trouble with that.