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Halcyon for Microsoft Sentinel (Preview)

avaldaja Halcyon Tech, Inc.

Halcyon for Microsoft Sentinel - Layered Ransomware Defense for Microsoft Security Ecosystems

Advanced Ransomware Defense for Microsoft Security Ecosystems

Purpose-Built Anti-Ransomware Protection and Security Resilience with Microsoft Sentinel and Microsoft Defender
Ransomware moves in seconds, not days. Halcyon integrates natively with Microsoft Sentinel and Microsoft Defender for Endpoint (MDE) to deliver earlier detection, automated response, and immediate containment of ransomware threats across the Microsoft security stack.
Together, Halcyon and Microsoft provide a unified defense that transforms ransomware detection into actionable, automated protection stopping attacks before business disruption occurs.


The Challenge

Modern ransomware campaigns are fast, evasive, and human-operated:
  • Threats bypass traditional EDR and security controls
  • Manual response workflows delay containment
  • Endpoint tampering disables security protections
  • Fragmented tooling slows investigation and response

The Solution: Halcyon Inside the Microsoft Ecosystem

Halcyon enhances Microsoft Sentinel and Microsoft Defender by injecting dedicated anti-ransomware telemetry, protection, and response automation directly into existing Microsoft workflows.


Key Capabilities

Unified Threat Visibility with Microsoft Sentinel

  • Halcyon ransomware alerts mapped directly to Sentinel’s schema
  • Correlated visibility across Halcyon, Defender, and Microsoft telemetry
  • Faster investigation using KQL, Sentinel analytics, and Security Copilot

Anti-Tamper Monitoring and Enforce Response Actions in Microsoft Defender

  • Halcyon continuously monitors Microsoft Defender EDR’s health and integrity.
  • Detect EDR tampering, bypass attempts, and privelege escalation.
  • Trigger Microsoft Defender response actions, including host isolation, on Halcyon threat detection via Microsoft Sentinel

Re-Infection & Lateral Movement Prevention

  • Continuous monitoring to detect and disrupt ransomware propagation
  • Behavioral intelligence identifies malicious activity attempting to re-establish persistence or move laterally
  • Ensures threats are fully contained and prevents re-compromise after isolation

Layered Ransomware Defense for Microsoft Security

Detect
Halcyon identifies ransomware behaviors earlier than traditional EDR
See
Alerts appear natively inside Microsoft Sentinel with full context
Respond
Sentinel automation triggers response actions
Contain
Infected endpoints are isolated immediately to stop propagation