Web sites in China are being used heavily to target computer networksin the Defense Department and other U.S. agencies, successfullybreaching hundreds of unclassified networks. The Washington Postreports that while classified systems have not been compromised, U.S.authorities remain concerned because, as one official said, evenseemingly innocuous information, when pulled together from varioussources, can yield useful intelligence to an adversary. U.S. analystsare divided on whether the attacks constitute a coordinated Chinesegovernment campaign to\u00a0 penetrate U.S. networks and spy ongovernment databanks Another official, however, cautioned againstexaggerating the severity of the intrusions. He said the attacks, whileconstituting "a large volume," were "not the biggest thing going on outthere." Read more.