Abstract
In order to provide a transaction environment of more security for e-commerce system, a novel intrusion detection system (IDS) based on the system call sequences is proposed in this paper. Firstly, this system improves the basic short sequence matching model combined with consistency principle of process initialization to emphasize on detecting system call sequences when process is initializing. Secondly, matching model of sequence correlation coefficient is established. Finally, the two models are utilized to evaluate synthetically the process behavior, so as to detect security situation of the whole e-commerce system. Experimental results show that IDS with the new technology can obviously increase the detection rate and reduce the false alarm rate.