Malicious virus shuttered U.S. power plant - DHS

UPDATE 1-Malicious virus shuttered U.S. power plant -DHS | Reuters: "an 16 (Reuters) - A computer virus attacked a turbine control system at a U.S. power company last fall when a technician unknowingly inserted an infected USB computer drive into the network, keeping a plant off line for three weeks, according to a report posted on a U.S. government website."