Computer-implemented method with real-time response mechanism for detecting viruses in data transfer on a stream basis

摘要

A computer-implemented and stream-based virus-detecting method which inspects packets for malicious contents in a network system scans each incoming packet forming input data for virus code. Depending on packet type, when a packet contains virus code, the method either removes the virus code, replaces a segment previously occupied by the virus code with information indicating the existence of the virus code and creates a modified packet by reconstructing a header and a checksum of the packet, or removes the virus without creating a modified packet, or withholds a last packet from reaching its destination address.