The Chinese government is ratcheting up its cyberspying operations against the U.S., a congressional advisory panel found, citing an example of a carefully orchestrated campaign against one U.S. company that appears to have been sponsored by Beijing.

The unnamed company was just one of several successfully penetrated by a campaign of cyberespionage, according to the U.S.-China Economic and Security Review Commission report to be released Thursday. Chinese espionage operations are "straining the U.S. capacity to respond," the report concludes.

The bipartisan commission, formed by Congress in 2000 to investigate the security implications of growing trade with China, is made up largely of former U.S. government officials in the national security field.

The commission contracted analysts at defense giant Northrop Gruman Corp. to write the report. The analysts wouldn't name the company described in the case study, describing it only as "a firm involved in high-technology development."

The report didn't provide a damage assessment and didn't say specifically who was behind the attack against the U.S. company. But it said the company's internal analysis indicated the attack originated in or came through China.

Click here to continue reading at the Wall Street Journal.