Chinese hackers: No site is safe

ZHOUSHAN, China (CNN) -- They operate from a bare apartment on a Chinese island. They are intelligent 20-somethings who seem harmless. But they are hard-core hackers who claim to have gained access to the world's most sensitive sites, including the Pentagon.

In fact, they say they are sometimes paid secretly by the Chinese government -- a claim the Beijing government denies.

"No Web site is one hundred percent safe. There are Web sites with high-level security, but there is always a weakness," says Xiao Chen, the leader of this group. >> More ..