International Business Machines Corporation

Frederic G Thiele

Michael A Walter

Jeffrey S Lahann

Computer system, method and program product for identifying a malicious intrusion. A first number of different destination IP addresses, a second number of different destination ports and a third number of different signatures of messages, are identified from a source IP address during a predetermined period. A determination is made that in one or more other such predetermined periods the source IP address sent messages having the first number of different destination IP addresses, the second number of different destination ports and the third number of different signatures. Based on the determination that in the one or more other such predetermined periods the source IP address sent messages having the first number of different destination IP addresses, the second number of different destination ports and the third number of different signatures, a determination is made that the messages are characteristic of a malicious intrusion.

System, method and program for identifying and preventing malicious intrusions

A computer system and program product for automatically determining if a packet is a new, exploit candidate. First program instructions determine if the packet is a known exploit or portion thereof. Second program instructions determine if the packet is network broadcast traffic presumed to be harmless. Third program instructions determine if the packet is network administration traffic. If the packet is a known exploit or portion thereof, network broadcast traffic, or network administration traffic, the packet is not considered a new, exploit candidate. If the packet is not a known exploit or portion thereof, network broadcast traffic, or network administration traffic, the packet is an exploit candidate. Alternately, the first program instructions determine if the packet is a known exploit or portion thereof. The second program instructions determine if the packet is network broadcast traffic presumed to be harmless. Third program instructions determine if the packet is another type presumed or known from experience to be harmless. If the packet is a known exploit or portion thereof, network broadcast traffic, or the other type, the packet is not considered a new, exploit candidate. If the packet is not a known exploit or portion thereof, network broadcast traffic, or the other type, the packet is an exploit candidate.

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Niwot, CO, United States of America

Frederic G Thiele