Abstract: The invention provides a network security method and system for use in a communications network, said network comprising a plurality of devices adapted to communicate over the network, at least one device capable of downloading or uploading an application over the network, said system comprises means for data capture on the network by receiving data from a first data source and a second data source; means for analysing comprising means for correlating data arising from network behaviour of at least one device obtained from the first data source and data from a second data source and means for generating a data structure; and based on said analyses of the generated data structure, means for identifying applications on devices which are behaving suspiciously.

Abstract: The invention provides a system and method for filtering unsolicited network messaging in a network comprising at least one remote messaging device, at least one data routing device and at least one remote destination device. The invention provides a means for determining a probability of the network message being unsolicited; and means for translating a first network address into a second network address associated with unsolicited network messaging when the probability determining means indicates a high probability of unsolicited network messaging. In a further embodiment there is provided a means for translating the first network address into the at least one second network address associated with legitimate network messaging, when the probability determining means indicates a low probability of unsolicited network messaging.