What is an Intrusion Detection System (IDS)? + Best IDS Tools
An intrusion detection system (IDS) is a software application or hardware device that detects vulnerability exploits, malicious activity, or policy violations. IDSs place sensors on network devices like firewalls, servers, and routers, or at a host level. Once the IDS detects any cyber threats, the system will either report this information to an administrator or a security information and event management (SIEM) system collects it centrally.