Microsoft Defender XDR: The Renaming Challenge and Lingering Legacy Issues

Microsoft 365 Defender was officially rebranded as Defender XDR 499 days ago, yet users still encounter emails and interfaces referencing the old name. This highlights the challenges of branding consistency in large-scale cloud ecosystems.

You Should Know:

1. Legacy References in Microsoft Products

• Check for outdated branding in:
• Email quarantine logs (Security & Compliance Center).
• PowerShell cmdlets (e.g., `Get-M365DSCConfiguration` may still reference old terms).
• Azure AD (now Entra ID) still appears in logs and APIs.

2. PowerShell Commands to Audit Defender XDR

<h1>List Defender XDR alerts (legacy commands may still work):</h1>

Get-M365DSecurityAlert

<h1>Cross-check with modern equivalents:</h1>

Get-DefenderXDRIncident 

3. Windows/Linux Log Analysis for Inconsistencies

• On Linux, use `grep` to scan logs for deprecated terms:

  grep -r "Microsoft 365 Defender" /var/log/ 
  

• On Windows, filter Event Viewer:

  Get-WinEvent -LogName "Microsoft-Windows-Defender/Operational" | Where-Object { $_.Message -like "*365*" } 
  

4. API Endpoints and Deprecation

• Legacy API calls may still work:

  curl -H "Authorization: Bearer $token" https://api.security.microsoft.com/v1.0/alerts 
  

• Microsoft’s official Defender XDR API docs list updated endpoints.

5. Renaming Workarounds in ConfigMgr/MECM

• Update scripts referencing “SCCM” or “MECM” to “ConfigMgr”:

  </li>
  </ul>
  
  <h1>Replace old SCCM cmdlets:</h1>
  
  Set-CMApplication -Name "LegacyApp" -NewName "ModernApp" 
  

  What Undercode Say:

  Microsoft’s rebranding efforts often outpace technical updates, leaving admins to manually clean up references. Key takeaways:
  – Audit scripts/logs for deprecated terms (e.g., “Azure AD,” “M365 Defender”).
  – Leverage PowerShell/APIs to force consistency.
  – Monitor Microsoft’s changelogs for backward-compatibility deadlines.

  Expected Output:

  [plaintext]
  1. Alerts/incidents scanned for legacy naming.
  2. Scripts updated to “Defender XDR” and “Entra ID”.
  3. Logs purged of obsolete terminology.
  [/plaintext]

  For further reading: Microsoft Defender XDR Documentation

  References:

  Reported By: Rlcam Microsoft – Hackers Feeds
  Extra Hub: Undercode MoN
  Basic Verification: Pass ✅

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