Microsoft Defender and Purview Investigations
Advanced threat hunting and eDiscovery consulting using Microsoft Defender for Endpoint and Microsoft Purview — delivering actionable intelligence and legally defensible workflows for enterprise environments.
Microsoft Defender for Endpoint
4n6PI provides specialist threat hunting and investigation support using Microsoft Defender for Endpoint — going beyond built-in alerts to uncover hidden attacker behavior, validate detections, and build detection logic your team can reuse.
Advanced Threat Hunting (KQL)
Custom KQL queries across Microsoft Defender for Endpoint to surface attacker activity that automated alerts miss — lateral movement, credential access, living-off-the-land techniques, and persistence mechanisms.
Alert Investigation & Validation
In-depth investigation of Defender alerts to determine whether detections represent genuine threats, false positives, or indicators of broader compromise requiring escalation.
Behavioral Anomaly Detection
Analysis of endpoint telemetry to identify behavioral anomalies — unusual process chains, abnormal network connections, suspicious authentication patterns, and off-hours activity.
Endpoint Telemetry Analysis
Deep analysis of Defender for Endpoint telemetry to reconstruct attacker timelines, identify patient zero, map lateral movement, and determine the full scope of an incident.
Microsoft Purview eDiscovery
4n6PI supports enterprise eDiscovery workflows using Microsoft Purview eDiscovery Standard and Premium — managing collections, case workflows, and data review aligned to legal and compliance requirements.
Case Management
End-to-end eDiscovery case setup and management within Microsoft Purview — including custodian management, legal hold placement, and case documentation aligned to litigation requirements.
Data Collection & Review Workflows
Structured collection of relevant data from Microsoft 365 sources — Exchange, SharePoint, Teams, OneDrive — with review workflows designed to support attorney review and production.
Legal & Compliance Support
eDiscovery support aligned to legal hold obligations, regulatory requirements, and litigation timelines — with documentation suitable for counsel review and court proceedings.
When to Engage 4n6PI for Defender & Purview
- Defender alerts requiring deeper investigation than the portal provides
- Suspected compromise not surfaced by automated detections
- Need for custom KQL hunting logic for your specific environment
- Litigation hold requirements across Microsoft 365 data sources
- eDiscovery collection and review for legal proceedings
- Regulatory investigation requiring structured data collection
- Internal HR or compliance investigation using Purview
Need Defender or Purview Support?
Whether it's a threat hunt, alert investigation, or eDiscovery collection — 4n6PI brings specialist Microsoft security stack expertise to your environment. Remote engagements available.