Report: Chinese Web sites used to target U.S. systems

Web sites in China are being used as a staging ground for attacks on computer networks in the U.S. Defense Department and other agencies, the Washington Post reported on Thursday.

The newspaper said no classified systems have been compromised but officials were concerned that data pulled together from different agencies could become useful intelligence to an adversary.
The newspaper cited four government officials who spoke separately about the intrusions, which were said to go back two or three years. It said the FBI had launched an investigation.
"It's not just the Defense Department but a wide variety of networks that have been hit," including the departments of State, Energy, and Homeland Security as well as defense contractors, one official was quoted as saying.
"This is an ongoing, organized attempt to siphon off information from our unclassified systems." the official said....