The hitherto unreported attacks have been kept secret by the Bush administration for fear that it would damage attempts to co-opt China in diplomatic offensives against North Korea and Iran.
Sources told the military affairs publication Defense News that there had been a fierce internal battle within Washington over whether to make the attacks public. In the end, the Pentagon's annual assessment of the growing Chinese military build-up barely mentioned the threat.
"After a contentious debate, the White House directed the Pentagon to limit its concern to one line," Defense News said.
Let's get real, folks. The Chinese are not our friends. More from the Telegraph article:
Military experts have already noted that Chinese military expenditure is increasingly designed to challenge American military pre-eminence by investing in weaponry that can attack key systems such as aircraft carriers and satellites.
At the same time, China is engaged in a large-scale espionage effort against American high-tech firms working on projects such as the multibillion-pound DD(X) destroyer programme.
Several spy rings have been cracked and the FBI is increasing the number of counter-intelligence staff tracking the Chinese effort.