Use IRS Form 14039 to alert the IRS that someone has filed a return using your identification. The IRS may send you a "Letter 5071C" asking that you verify your identity. You can respond via telephone or through the IRS' online Identity Verification...
If the IRS identifies a suspicious tax return, it will send you Letter 5071C, which asks you to verify your identity online. If you’ve been a victim of a data breach, you may receive Letter 5747C and be asked to verify your identity in person. Your state’s Department of Motor ...