Respond to a DLP alert: A playbook for IT and data owners

Quick answer

Establish whether transfer was blocked or completed, identify data and destination from available evidence, and route to the responsible team. One alert alone does not prove a leak or user misconduct.

A DLP alert begins an investigation; it does not establish a confirmed leak. Distinguish attempted, blocked, completed, and excepted activity using available evidence. An event label alone is not a basis for blaming an employee.

Receive the event and preserve necessary evidence

Record time and time zone, device, user, policy, and outcome. Endpoint DLP Plus activity reports can contribute to the investigation. Store only necessary evidence in a restricted location rather than sharing sensitive file names or report details publicly.

Establish what actually left the organization

Compare console evidence with authorized endpoint and destination records. Identify information categories, recipients, and potential impact. When evidence is incomplete, record unknown rather than declaring safety. Assign technical, data-owner, and business coordination responsibilities.

Contain proportionately and learn

Consider relevant transfer restrictions, access revocation, or replacement of confirmed exposed secrets, while assessing operational impact. For AI services, review data handling and contact the provider through approved channels. Correct the rules, process, and training according to the established cause.

Implementation checklist

• Separate blocked, allowed, override, and unknown outcomes.
• Assign escalation ownership based on risk.
• Maintain restricted evidence and a clear timeline.
• Retest corrective controls against legitimate workflows.

An illustrative incident exercise reveals decision ownership and evidence locations. Measure acknowledgement time, evidence completeness, and corrective actions completed rather than ticket closure counts alone.

A scenario to take into your evaluation

Run a synthetic transfer incident and inspect its timeline, assigned owner, evidence access and closure.

This is a proposed test, not a measured result or customer endorsement. Record the actual platform and edition, owner, expected result and observed outcome before expanding scope.