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Microsoft’s Security Copilot has introduced a game-changing feature: Overage Security Compute Units (SCUs). This innovation enhances automation use cases and enables broader promptbook runs by allowing organizations to utilize a low base-SCU allocation while paying only for additional SCU consumption as needed.
A prime example is Sentinel incident triage playbooks, which may intermittently require significant SCU resources for large-scale incidents. Stefano’s customized triage playbook, combining SOAR (Security Orchestration, Automation, and Response) and GenAI, perfectly demonstrates this capability.
Key Resources:
- Customized Triage Playbook: https://lnkd.in/dXEPRqei
- Overage SCU Blog: https://lnkd.in/dqPBuQgn
- Security Copilot Pricing: https://lnkd.in/dg2sb_pY
You Should Know:
1. Understanding SCUs (Security Compute Units)
SCUs measure the computational resources consumed by Security Copilot. They are used for:
– AI-driven security analysis
– Automated incident response
– Large-scale log processing
🔹 Check SCU Usage (Azure CLI):
az security copilot usage show --resource-group MyResourceGroup --workspace-name MyWorkspace
2. Implementing Sentinel Triage Playbooks
Stefano’s playbook integrates SOAR and GenAI, optimizing incident response.
🔹 Deploy a Sentinel Playbook (PowerShell):
New-AzSentinelAlertRule -ResourceGroupName "MyRG" -WorkspaceName "MyWorkspace" -DisplayName "AI-Driven Triage" -Query "SecurityAlert | where Severity == 'High'" -Enabled $true
3. Cost Optimization with Overage SCUs
Instead of over-provisioning, use on-demand SCUs for peak loads.
🔹 Monitor SCU Consumption (KQL in Sentinel):
SecurityCopilotUsage | summarize TotalSCU = sum(ComputeUnits) by bin(TimeGenerated, 1d) | render columnchart
4. Automating Incident Response
Leverage Logic Apps for automated workflows.
🔹 Trigger a Playbook via HTTP (Bash cURL):
curl -X POST -H "Content-Type: application/json" -d '{"IncidentID":"12345"}' https://your-logicapp-url.azurewebsites.net
5. Security Copilot API Integration
Extend automation using REST APIs.
🔹 Fetch Security Recommendations (Python):
import requests
headers = {"Authorization": "Bearer YOUR_ACCESS_TOKEN"}
response = requests.get("https://api.securitycopilot.microsoft.com/v1/recommendations", headers=headers)
print(response.json())
What Undercode Say:
Microsoft’s Overage SCUs provide a flexible, cost-effective way to scale security operations. By combining SOAR, GenAI, and Azure Sentinel, organizations can automate high-volume incident triage without over-provisioning resources.
🔹 Key Linux Commands for Security Analysts:
Monitor Azure resource logs az monitor activity-log list --resource-group MyRG --offset 24h Check running processes for anomalies ps aux | grep -i "suspicious_process" Analyze network connections netstat -tulnp | grep ESTABLISHED
🔹 Windows Security Commands:
Check recent security events
Get-WinEvent -FilterHashtable @{LogName='Security'; ID=4624} -MaxEvents 10
Verify firewall rules
Get-NetFirewallRule | Where-Object { $_.Enabled -eq 'True' }
🔹 Sentinel & KQL Tricks:
// Find brute-force attacks SecurityEvent | where EventID == 4625 | summarize Attempts = count() by Account, IPAddress | where Attempts > 5
Expected Output:
A scalable, AI-driven security operations framework that optimizes costs while maintaining robust threat detection and response.
For further reading:
References:
Reported By: Markolauren Securitycopilot – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
