Alert

An alert in cybersecurity is a critical notification generated by security monitoring systems—such as SIEM, IDS/IPS, EDR, or firewalls—when an anomaly, suspicious activity, or potential threat is detected that deviates from established baselines or security policies. These automated signals are triggered when a specific rule, behavioral pattern, or threat intelligence match is identified across data sources including network traffic, system logs, and user activities.

Alerts serve as the initial trigger for the incident response workflow, providing security operations teams with essential context such as the event's nature, timestamp, source, destination, and severity level. This information enables analysts to triage, prioritize, and investigate potential breaches efficiently. Effective alert management—including reducing false positives and ensuring timely resolution—is fundamental to maintaining a strong security posture and protecting organizational assets against evolving cyber threats.