Criminal hackers have always abused legitimate web services such as Gmail and Facebook to do their bidding, but increasingly they are finding new ways of blending into popular applications to avoid detection and find unsuspecting victims. An analysis of more than 400 malware families deployed over the past two years found that at least a quarter of them abused legitimate internet services in some way as part of their infrastructure, allowing malicious hackers to more easily blend in with normal traffic and complicating the job of those tasked with defending networks.

Source: Cyberscoop