Google Cloud Messaging (GCM) for Android allows developers to send messages to and from applications installed on Android devices. The messages can include links, text advertisements or commands. Kaspersky Lab researchers have identified multiple Android malware programs that use GCM as a command-and-control channel. The only way to block this channel of communication between virus writers and their malware is to block the developer accounts whose IDs are being used to register malicious programs with GCM, researcher says. Google did not immediately respond to an inquiry asking for information about the methods it uses to prevent abusing the service.”]