This is just a perfect example of why NOT to use Windows for everything. Secure or not, its the target of choice for hackers & virus writers. Bill Gates could make it the most secure OS on the planet someday, & it would still have the biggest bullseye painted in day-glo red smack in the middle of it.

"An unknown number of ATMs running Windows XP Embedded were shut down during the spread of the so-called Nachi worm, said executives at Diebold, which made the ATMs and refused to name the customers affected."