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American Cybersecurity firm Mandiant has issued an eye-opening report about hacking around the world. The company says a secret department of China's army is behind a large amount of the hacking attacks on American companies.

Mandiant released a 60-page report just yesterday that said the Communist Party of China has instructed the army to commit systematic cyber espionage and data theft against organizations around the world.

Mandiant says they tracked thousands of cyber attacks on U.S. companies and organizations starting in 2006 and running into this year. And they say they tracked the origin of those attacks to one particular neighborhood in Shanghai. Most of the attacks were coming from one group of hackers they call Advanced Persistent Threat 1 or APT1. Nearly every time they were intruding on American companies, they were using a computer address from Shanghai.

They were even more specific than that. Mandiant says they also traced this to a tall building on the outskirts of Shanghai with satellite dishes and a secure perimeter. They say the building houses a specific unit of the People's Liberation Army.

According to the report, that army unit also hires people who can speak English, are able to expoit networks and know computer security.

China denies any government involvement in computer hacking.

Conclusion: Fact