title: Data Exfiltration
id: 4a9c6988-4b05-51d0-b019-fa76a56d3a5a
custom_id: wf-dlp-002
status: stable
level: critical
description: |
    Detects data exfiltration events where sensitive data is being transferred
    to unauthorized external destinations. This is a critical alert requiring
    immediate investigation and response.
author: WitFoo
date: 2026-02-21
tags:
    - attack.exfiltration
    - attack.t1041
references:
    - https://attack.mitre.org/techniques/T1041/
logsource:
    product: witfoo
    service: artifact-exporter
detection:
    selection:
        messageType: "data_exfiltration"
    condition: selection
fields:
    - clientIP
    - serverIP
    - userName
    - totalBytes
    - protocol
    - matchedLeadRules
    - severityLabel
falsepositives:
    - Authorized cloud file sharing (OneDrive, SharePoint)
    - Approved data transfers to business partners
