http://en.wikipedia.org/wiki/StuxnetA new worm discovered in the wild that is supposed to spy on and reprogram industrial systems. Apparently specifically written to attack SCADA systems and control and monitor their processes.
This means it's the first known virus to truly affect the physical world. It will cause industrial machines, a few examples being robotic arms in car factories, cleaning systems, and anything controlled by a computer, to lose control and do whatever Stuxnet commands them to.
Originally developed in China, it has been targeting Iran and China itself mostly. There are only a little under 3,000 known infections of the worm in America.
China - 6,000,000 (unconfirmed) (October 1)
Iran - 62,867
Indonesia - 13,336
India - 6,552
United States - 2,913
Australia - 2,436
Britain - 1,038
Malaysia - 1,013
Pakistan - 993
Germany 5 (September)
Discuss yet another Y2K replacement.