In certain embodiments, a method for tagging communications from a user system, such that a source of a malicious computer element in a computer network may be determined, includes determining tag information for a user system in the computer network, the tag information physically identifying the user...http://www.google.co.uk/patents/US7958557?utm_source=gb-gplus-sharePatent US7958557 - Determining a source of malicious computer element in a computer network
