A method, system and computer program product for detecting the dissemination of malicious programs. The degree of randomness in the Internet Protocol (IP) destination addresses of received IP packets to be forwarded to an external network may be detected by performing a hash function on the IP destination addresses thereby generating one or more different hash values. If a high number of different hash values were generated for a small number of IP packets examined, then random IP destination addresses may be detected. By detecting random destination IP addresses, the dissemination of a malicious program, e.g., virus, worm program, may be detected.

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