Cybercriminals Use Anti-Spam System for Communication Between Malware and Server
Cybercriminals are coming up with new ways to ensure that the malware they create can communicate with command and control (C&C) servers. Symantec experts found that they’ve started using the Sender Policy Framework (SPF) to maintain a solid connection between the malicious element and the C&Cs.
Image Credit: SYMANTEC
Very tricky, a MUST read!