What it means
Events are the raw observations produced by systems, users, sensors, and services. Analytics and rules turn some events into alerts. Analysts investigate alerts and other evidence to determine whether an incident exists. The terms represent stages of interpretation, not interchangeable labels.
How it works
Programs define logging sources, detection logic, severity, triage, escalation, incident declaration authority, case records, communications, and closure criteria. Feedback from investigations improves collection and detection so important activity is visible without overwhelming analysts.
A failed login is an event. Hundreds of failures followed by a successful privileged login may generate an alert. Investigation may confirm a password-spraying incident, or it may show an approved test and close the alert as benign.
Practical focus
- Define event, alert, and incident criteria consistently
- Preserve the evidence needed to investigate and reproduce decisions
- Route alerts by severity, asset importance, and required expertise
- Feed confirmed outcomes back into detection engineering
Common mistakes
- Calling every alert an incident
- Collecting high-volume events without a use case or retention plan
- Closing alerts quickly without recording the evidence and rationale
Certification relevance
This subject appears in or supports the following certification bodies of knowledge: