Intrusion Detection

Intrusion detection refers to the process of identifying unauthorized access or malicious activity on a computer system or network. The goal of intrusion detection is to detect potential security threats and take appropriate action to prevent damage or theft of information.

Intrusion detection can be performed using two main methods: signature-based intrusion detection and anomaly-based intrusion detection.

Signature-based intrusion detection uses a database of known security threats, or signatures, to detect malicious activity on a system or network. When a signature match is detected, an alert is generated and appropriate action can be taken.

Anomaly-based intrusion detection, on the other hand, identifies behavior that deviates from normal activity on a system or network and generates an alert. This type of intrusion detection is useful for detecting zero-day attacks, which are attacks that exploit vulnerabilities that have not yet been discovered.

Intrusion detection is an important component of a comprehensive security strategy, as it provides a mechanism for detecting and responding to potential security threats in real-time. However, it is important to note that intrusion detection alone is not enough to ensure the security of a system or network. Intrusion detection should be used in conjunction with other security measures, such as firewalls, access controls, and encryption, to provide comprehensive protection against potential security threats.