Three Gorges Dam

20110317-200559-pic-527537627.jpg

Flood water is released from the Three Gorges Dam's floodgates in Yichang, China, after heavy rains last summer. Critical infrastructure controlled by computers, including dams, pipelines and factories, are more vulnerable to cyber-attacks in China than in other countries, security specialists say. Three Gorges is the largest dam in the world. (Associated Press)