Trigger: DLP Policy Violation Alert from Leocybsec DLP Scanner
Input: DLP Alert Data (includes sensitivity label, violation type, affected file(s), user(s), action performed, access type, timestamp, etc.)
DLP Incident Response Flow
Alert Severity CheckHigh:
Sensitive files (Confidential or Private) externally shared
Abnormal access during non-business hours from unusual geolocations
Link-based sharing of confidential data
Bulk downloads beyond 120% of average
Repeated violations from a single user
Medium:
Excessive file views (15+ within 30 min)
Single instance of Private/Internal data shared externally
Suspicious downloads near baseline threshold
Unusual user behavior without confirmed policy violation
Low:
Access of public/internal files during normal hours
Legitimate app/service triggering false positives
One-off viewing behavior aligned with business roles
Actions Based on Severity
High:
Revoke access to files, notify IT and user manager, initiate forensic investigation, and temporarily disable the user account if compromise suspected.
Update file permissions and sharing settings.
Add violating user to enhanced DLP watchlist.
Medium:
Notify the user and manager.
Monitor behavior for the next 7 days.
Recommend focused security awareness training.
Low:
Log the incident for review, no immediate action.
Validate whether it's a false positive via Cribl/Splunk logs.
Violation Type & Scope AssessmentSingle File Violation:
Validate file sensitivity and exposure path.
Notify the file owner and advise secure sharing practices.
Multiple File Violations:
Block user access to affected directories.
Perform bulk permissions audit.
Cross-User Violation (Org-Wide):
Conduct pattern analysis for shared behavior.
Evaluate policy tuning and escalate to compliance/legal if needed.
Repeated Offenses (Same User):
Flag user for HR/security meeting.
Enroll in mandatory DLP policy refresher.
Recommended Actions for Continuous Data Security
If external sharing is detected:
Immediately revoke links and enforce stricter access controls.
If bulk download or excessive file views detected:
Set up behavior-based adaptive policies and thresholds.
If off-hours or geolocation anomaly:
Review login logs, enforce conditional access or MFA.
If sensitive access changes occur:
Block sharing type, notify owner, and audit all similar files.
If user appears unaware:
Assign contextual awareness training focused on cloud data hygiene.
Alert Sensitivity Levels
Optional Enhancements (Post-Incident)Implement MLOps feedback loop to fine-tune false positive/negative detection.
Introduce DLP Policy Tuning Workflow in case of repeated false alerts.
Create a risk dashboard in Splunk summarizing top violators, policy breach types, and recurring issues.
