Malware is one of the most sophisticated Apache backdoors it’s seen so far. Hundreds of servers have been compromised by Linux/Cdorked.A that’s infecting visitors to the sick machines with the Blackhole malware kit. The malware leaves no traces of compromised hosts on the hard drive other than a modified binary file. All of the information related to the backdoor is stored in shared memory and all of the command and control activity isn’t recorded in any Apache logs, making it difficult for defenders to identify it.”]