Even if you guard that critical 9-digit number carefully, you can still have a fraudulent tax return filed using it.
Your first thoughts when you become the victim of a tax identity thief might go along the lines of:
Tax identity theft simply means that someone got your Social Security number and filed a fraudulent return with it, claiming a refund. You would probably find out about it when you got a letter from the IRS stating that your Social Security number was used to file more than one return. Or you owe more tax than you thought you did. Or a return came in using your Social Security number, claiming wages from an employer who wasn't yours. [MORE] . . .