Here's a Hacker Attack That Will Make You Grind Your Teeth

As if going to the dentist wasn't painful enough.

A dental practice was hit last year by a strain of malicious software that sought out X-ray images and encrypted them on the clinic's computer system. Hackers in Eastern Europe then demanded $500 in Bitcoins to unlock the files, according to Jeff Horne, who investigated the breach for Accuvant, a Denver-based security firm. The ransom amount increased by $500 each day it wasn't paid.