CN = china. So, computers based in china, although I am at a loss as to what the thread parent is saying exactly about "CN computers actually being US". Same with "zero day'd/patched" — aren’t those opposite notions?
It's a little unclear, but if I were to guess I'd say they meant the machines are located in China but have been zero day'd, then patched and root-kitted by the attacker, who was in the US (or at least not China)
