in tonight's "money profiles," benno schmidt shows how i.d. theft can take over a victim's life, and how to fight back. >> reporter: a fitness fanatic and competitive biker, retired banker santiago iglesias loves to spend down time listening to, and reading up on, his jazz heroes. >> the miami jazz festival did a show celebrating miles. >> reporter: but the music died for iglesias recently, and his world nearly collapsed when he discovered he was a victim of identity theft. >> i felt totally violated that somebody had really taken my good name, my good credit and had done horrendous things. >> reporter: a cyber thief stole iglesias's social security number, threatened his credit and exposed him to thousands of dollars in taxes by filing a bogus income tax return in maryland. the guy claimed full refund, and the state gave it to him. so they're coming after me for $2,600 balance due, including the tax, interest and penalty. >> reporter: iglesias isn't alone in his misery, according to the federal trade commission, last year identity theft toppe