Abstract: An anti-malware system including at least one database, remote from a plurality of computers to be protected, which stores identification of computer applications resident on the computers to be protected and an application-specific communications footprint for the computer applications, and at least one server, remote from the plurality of computers to be protected, and being operative to calculate a reference computer-specific communications composite pattern based on multiple application-specific communications footprints for applications installed on the computers to be protected, calculate a current computer-specific communications composite pattern based on actual communications of at least one the plurality of computers to be protected, and provide an alert when the current computer-specific communications composite pattern of the at least one of the plurality of computers to be protected differs from the reference computer-specific communications composite pattern of the at least one of the plurality

Abstract: A mobile communicator network routing decision system communicating with each mobile communicator device of a plurality of mobile communicator devices, the plurality of mobile communicator devices communicating with a network via at least one computerized network gateway server, the system including security risk calculation functionality operable for calculating a calculated malware-associated risk associated with each mobile communicator device, and security risk responsive decision functionality, operating in response to the calculated malware-associated risk, for ascertaining whether to allow the communicating of each mobile communicator device with the network via the computerized network gateway server.