Correct Answer is C) Intrusion Detection Systems
An intrusion detection system (IDS) is a device or software application that monitors a network for malicious activity or policy violations.It is a software application that scans a network or a system for harmful activity or policy breaching. Any malicious venture or violation is normally reported either to an administrator or collected centrally using a security information and event management (SIEM) system. Any malicious activity or violation is typically reported or collected centrally using a security information and event management system. Some IDS’s are capable of responding to detected intrusion upon discovery. These are classified as intrusion prevention systems (IPS).
Intrusion detection system can be considered as an effective solution to ensure integrity .There is a wide array of IDS, ranging from antivirus software to tiered monitoring systems that follow the traffic of an entire network. The most common classifications are:
Host-based intrusion detection systems (HIDS): A system that monitors important operating system files.
Network intrusion detection systems (NIDS): A system that analyzes incoming network traffic.
There is also subset of IDS types. The most common variants are based on signature detection and anomaly detection.