This is a bit sinister: the China Internet Network Information Center (CNNIC) has been dropping digital certificates into the computers of everyone in China, which could potentially allow them to snoop on your normally secure ‘https’ web-surfing, such as your online banking and email.
CNNIC’s digital certificate, which is probably in your computer right now, has not been proved to be maliciously spying, but it’s a matter of trust. Do you really trust CNNIC, the overlords of the ‘Great Firewall’, to not be potentially peeking into your email, Facebook, Paypal account or online bank? Nope, thought not.