Hendelseskorrelasjon

Hendelseskorrelasjon, also known as event correlation, is a process used in information technology and security to analyze and link together multiple related events from different sources. The goal is to identify patterns, anomalies, or potential security threats that might not be apparent when looking at individual events in isolation. This technique is crucial for understanding complex systems and detecting sophisticated attacks.

By correlating events, systems can filter out noise and focus on significant activities. For example, a single failed login attempt might be insignificant, but a series of failed logins from different IP addresses followed by a successful login from an unusual location could indicate a brute-force attack or account compromise. Hendelseskorrelasjon relies on establishing rules or logic that define how events should be linked. These rules can be based on common identifiers like IP addresses, user IDs, timestamps, or event types.

The output of hendelseskorrelasjon can range from simple alerts to detailed incident reports. It helps security analysts and system administrators gain a comprehensive view of what is happening within their network and applications, enabling faster and more effective responses to security incidents and operational issues. Effective implementation requires careful planning and ongoing tuning of correlation rules to minimize false positives and ensure that genuine threats are identified.