Definition
Threat detection is the process of identifying malicious activity or security breaches within an organization's IT environment. It involves actively monitoring systems, networks, and applications for indicators of compromise or suspicious patterns that deviate from normal operations. This proactive approach is crucial for minimizing the potential damage caused by cyberattacks by enabling swift response and containment. For instance, detecting an unusual surge in outbound data traffic from a server could signal a data exfiltration attempt. A common point of confusion is mistaking threat detection for threat prevention, which aims to stop threats before they enter the system. Understanding threat detection is fundamental for roles covered by certifications like CompTIA Security+, CySA+, and CISSP.