By Joe Mcdonald (CP)

Google's accusation that its email accounts were hacked from China landed like a bombshell because it cast light on a problem that few companies will discuss: the pervasive threat from China-based cyberattacks.

The hacking that angered Google Inc. and hit dozens of other businesses adds to growing concern that China is a centre for a global explosion of Internet crimes.

The government denies it is involved. But experts say the highly skilled attacks suggest the military, which is a leader in cyberwarfare research, or other government agencies might be breaking into computers to steal technology and trade secrets to help state companies.

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