China seems to be deeply involved in hacking, perhaps to the level of cyber war

"Enter the Cyber Dragon" by Michael Joseph Gross, published in the September 2011 issue of Vanity Fair, tells a story of years of hacking from China that has penetrated U.S. and foreign government computers, the computers of defense contractors, and many large and important firms. The article convinces me that combating such cyber crime should be a major role for government, and that the United States and NATO nations must do a lot more to prepare for cyber attacks and indeed to prepare for cyberspace to be a field of combat in future wars.

(Thanks to Julianne for alerting me to this article.)