Incidents & Investigation
Investigate DLP incidents, review the evidence, record the outcome, and fix the rule that produced them.
What Incident Investigation Is#
An incident is what a DLP policy produces when content matches. Investigation is the step that decides whether the match was a real data movement or a rule that needs tuning.
Treat investigation as part of policy quality, not as a separate queue to clear. Every false positive you review is a rule that should be improved.
Triage#
An incident record contains six fields. Read them in this order:
| Field | What it tells you |
|---|---|
| Matched rule | The classification or pattern rule that produced the match. |
| Endpoint and user | The device where the match happened and the operating system user who was active at the time. |
| Channel | Which protected channel the content was moving through: USB, web, email, clipboard, screenshot, or printing. |
| Time | When the match occurred, in the platform time format. |
| Evidence | The captured detail that supports the match, subject to your evidence settings. |
| Policy | The policy that raised the incident, including its current action and target scope. |
- Read the matched rule first. A rule that matches too broadly explains most of the incident volume.
- Check the channel. The same content leaving over USB and over email are two different risks.
- Confirm the user. Because the agent runs as a service, user attribution is reliable even when the account is not an administrator.
- Look for repetition on the same endpoint. Repeated matches usually mean a workflow that needs an exception, not a malicious user.
Evidence#
Evidence is the detail captured at the moment of the match. What is captured depends on your evidence settings and on the channel, because different channels expose different information.
Notes and Closing#
- 1Record the decision
Write a note that explains what you concluded and why. The note is what makes the incident reviewable later.
- 2Set the outcome
Mark the incident as resolved or as a false positive. A false positive is a signal that the rule needs attention.
- 3Adjust the policy or rule
If the incident was a false positive, change the rule or add an exception instead of only closing the incident.
- 4Escalate when needed
If the incident suggests a real data movement, assign it and follow your organisation’s incident process.