Chinese hackers 'hit U.S. Chamber of Commerce by infiltrating 300 internet addresses'

Hackers in China have managed to penetrate the computer networks of the America's top business-lobbying group, it has been claimed.

All the data held by systems at the U.S. Chamber of Commerce, including information about its 3million members, are said to have been left vulnerable after the infiltration.

If true, the hack would be one of the boldest attacks yet in what has become an ongoing battle between Chinese hackers and companies and agencies in the U.S.

But the Chinese embassy in Washington denied that their government was behind the attacks, dubbing the allegations 'irresponsible'.

The security breach, which involved the infiltration of at least 300 internet addresses, was found last year and quietly shut down, the Wall Street Journal reported.

After a tip off from the FBI, computer security experts at the Chamber shut it down by unplugging and destroying some computers. Read More