Add Security Operations Admin Device rule

Author: DebLanger

exposure-management/whats-new.md

@@ -31,6 +31,7 @@ The following predefined classification rules were added to the critical assets
 | Classification                                       | Description                                                  |
 | :--------------------------------------------------- | :----------------------------------------------------------- |
 | Azure Key Vault with high number of operations       | This rule identifies and classifies Azure Key Vaults that experience a high volume of operations, indicating their criticality within the cloud environment. |
+| Security Operations Admin Device        | This rule applies to critical devices used to configure, manage, and monitor the security within an organization are vital for security operations administration and are at high risk of cyber threats. They require top-level security measures to prevent unauthorized access. |
 
 For more information, see, [Predefined classifications](predefined-classification-rules-and-levels.md)