Learn Editor: Update attack-surface-reduction-rules-reference.md

Author: YongRhee-MSFT

defender-endpoint/attack-surface-reduction-rules-reference.md

@@ -320,7 +320,7 @@ Dependencies: Microsoft Defender Antivirus
 ### Block credential stealing from the Windows local security authority subsystem
 
 > [!NOTE]
-> If you have [LSA protection](/windows-server/security/credentials-protection-and-management/configuring-additional-lsa-protection) enabled and [Credential Guard](/windows/security/identity-protection/credential-guard) enabled, this attack surface reduction rule is not required. 
+> If you have [LSA protection](/windows-server/security/credentials-protection-and-management/configuring-additional-lsa-protection) enabled, this attack surface reduction rule is not required. For a more secure posture, we also recommend enabling [Credential Guard](/windows/security/identity-protection/credential-guard) with the LSA protection.
 
 This rule helps prevent credential stealing by locking down Local Security Authority Subsystem Service (LSASS).