Intrusion Detection and Prevention Systems: An Updated Review

The evolution of Information Technology (IT), cutting across several divides in our daily endeavors allows us to interact with all forms of data at different OSI model layers from application to physical. These data are susceptible to intrusion, aimed at compromising its integrity; thus, the need to protect these data, maintain its integrity, confidentiality, and availability cannot be overemphasized. Intrusion Detection and Prevention System (IDPS) is a device or software application designed to monitor a network or system. It detects vulnerabilities, reports malicious activities, and enacts preventive measures to keep up with the advancement of computer-related crimes using several response techniques. This paper presents an updated review on IDPSs given the fact that the most recent review found on the subject was done in 2016. It will also discuss the use of IDPSs to identify vulnerabilities in various channels through which data is accessed on a network or system and prevention mechanisms applied to mitigate against intrusion.