Washington (CNN) -- Internet traffic from several U.S. government agency sites was briefly diverted through servers in China in April, congressional investigators reported Wednesday.
For 18 minutes, about 15 percent of all web traffic was redirected through China, including traffic to and from the sites of the U.S. Army, Navy, Marine Corps, Air Force, the office of the Secretary of Defense, the Senate and NASA, according to a report delivered to Congress by the U.S.-China Economic and Security Review Commission.
Investigators say the web traffic was diverted by China Telecom, a state-owned enterprise.
They do not know whether the diversion was intentional, whether the government of China played any role, or whether any sensitive data was compromised.
The report says that the irregular routing could have allowed the surveillance of users or sites, the disruption or diversion of communications and the compromising of supposedly secure encrypted sessions.
Pentagon spokeswoman Lt. Col. April Cunningham said the Defense Department "is concerned about any Internet traffic being intentionally rerouted outside of the usual operations." But, she said, "the security of Department of Defense information is not affected by misdirection of internet traffic." The Pentagon had no information to confirm whether the incident occurred, she said.
The Pentagon is in the process of establishing procedures "to address any potential current and future vulnerability," Cunningham told CNN.
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