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An intrusion detection system (IDS) is a device or software application that monitors network or system activities for malicious activities or policy violations and produces reports to a management station. The goal is to detect suspicious traffic in different ways. There are network based (NIDS) and host based (HIDS) intrusion detection systems. Some systems may attempt to stop an 
intrusion attempt but this is neither required nor expected of a monitoring system. Intrusion detection and prevention systems (IDPS) are primarily focused on identifying possible incidents, logging information about them, and reporting attempts. In addition, organizations use IDPSes for other purposes, such as identifying problems with security policies, documenting existing 
threats and deterring individuals from violating security policies. IDPSes have become a necessary addition to the security infrastructure of nearly every organization.

Network Intrusion Detection Systems (NIDS) are placed at a strategic point or points within the network to monitor traffic to and from all devices on the network. It performs an analysis of passing traffic on the entire subnet, works in a promiscuous mode, and matches the traffic that is passed on the subnets to the library of known attacks. Once an attack is identified, or abnormal behavior is sensed, the alert can be sent to the administrator. Host Intrusion Detection Systems (HIDS) run on individual hosts or devices on the network. A HIDS monitors the inbound and outbound packets from the device only and will alert the user or administrator if suspicious activity is detected. It takes a snapshot of existing system files and matches it to the previous snapshot. If the critical system files were modified or deleted, an alert is sent to the administrator to investigate. An example of HIDS usage can be seen on mission critical machines, which are not expected to change their configurations.

Market Analysis

The total Intrusion Detection System market is expected to grow from $2.716 billion in 2014 to $5.042 billion by 2019, at an estimated Compound Annual Growth Rate (CAGR) of 13.2 % from 2014 to 2019. Intrusion Detection and Prevention is experiencing a rapid adoption in the market with increase in security threats to enterprise networks. The Intrusion Prevention System/Intrusion Detection System (IPS/IDS) market in the Middle East and Africa is projected to grow from $229.91 million in 2014 to $510.22 million by 2019, at a CAGR of 17.30% between 2014 and 2019. The Intrusion Prevention System/Intrusion Detection System market is primarily driven by the increasing government regulations towards cyber security in this region.

The market for Middle East Cyber Security is expected to grow from $5.17 billion in 2014 to $9.56 billion in 2019, at a CAGR of 13.07% during the forecast period 2014-2019. Cyber attacks continue to grow rapidly in the Middle East. Most of the cyber attacks that originate from Middle East are generally Distributed-Denial-Of-Service attacks and website defacement. With the advancement of such attacks, government and enterprises in vital sectors are collaborating to implement strict laws and regulations for securing their critical networks. All these factors are expected to significantly influence the Middle East cyber security market in the next few years to come.