The network intrusion detection and prevention system (IDPS) appliance market is composed of stand-alone physical and virtual appliances that inspect defined network traffic either on-premises or in the cloud. They are often located in the network to inspect traffic that has passed through perimeter security devices, such as firewalls, secure Web gateways and secure email gateways. IDPS devices are deployed in-line and perform full-stream reassembly of network traffic. They provide detection via several methods — for example, signatures, protocol anomaly detection, behavioral monitoring or heuristics, advanced threat defense (ATD) integration, and threat intelligence (TI). When deployed in-line, IDPSs can also use various techniques to detect and block attacks that are identified with high confidence; this is one of the primary benefits of this technology. Next-generation IDPSs have evolved in response to advanced targeted threats that can evade first-generation IDPSs. (Retired as of Mar-12-2026).
MSSs provide organizations with a variety of management and operational services specific to security technologies and business outcomes for security. Capabilities include security monitoring, detection and response, exposure assessment and management as well as security consulting and security technology implementation. MSSs are delivered in a variety of modes, in the providers’ cloud infrastructure, as consultative engagements or through staff augmentation and on-premises. MSS providers offer a variety of different engagement models. These include heavily customized and consultancy-led models and commoditized technology management-driven experiences.
Gartner defines network detection and response (NDR) as products that detect abnormal network behaviors by applying behavioral analytics to network traffic data. NDR products continuously analyze raw network packets or traffic metadata within internal networks (east-west) and between internal and external networks (north-south). They include automated responses, such as host containment or traffic blocking, implemented directly or through integration with other cybersecurity products. Vendors deliver NDR as hardware or software appliances for sensors, with some supporting IaaS environments. Management and orchestration consoles are available as software or SaaS. Organizations rely on NDR to detect and contain postbreach activities such as ransomware, insider threats and lateral movements. NDR complements other technologies that primarily trigger alerts based on rules and signatures by building heuristic models of normal network behavior and detecting anomalies. Security teams commonly use NDR as a complementary detection and response technology within a broader set of security operations center (SOC) tools. These include security orchestration, automation and response (SOAR), security information and event management (SIEM), endpoint detection and response (EDR), and other detection technologies. These include security orchestration, automation and response (SOAR), security information and event management (SIEM), endpoint detection and response (EDR), and other detection technologies.
Security information and event management (SIEM) is a configurable system of record that collects, aggregates and analyzes security event data from on-premises and cloud environments. SIEM processes security event data for the purposes of threat detection, investigation and response. It natively supports data normalization and offers user-configurable detection content and reporting to orchestrate threat mitigation and satisfy compliance requirements. These solutions are delivered via a SaaS platform or client-hosted on-premises or private cloud. The security information and event management (SIEM) system must assist with: 1. Aggregating and normalizing data from various IT and operational technology (OT) environments. 2. Designing and executing near real-time monitoring and alerting content. 3. Enriching and investigating security events of interest. 4. Supporting manual and automated response actions. 5. Maintaining and reporting on current and historical event data.