Weak evidence links congressmen's cyberattacks to China

House of Representatives members who worry that China may have been responsible for attacks on their computers have provided little evidence to back up their claims, according to computer security experts. Computer attacks are often launched from Chinese IP addresses because a large number of computer systems in China have been hacked and are being used to redirect online attacks. Also, the country is notorious for providing so-called "bulletproof" hosting services that keep servers running even when international law enforcement tries to take them down.
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