updates

windows/security/book/operating-system-security.md

@@ -7,7 +7,7 @@ ms.date: 04/09/2024
 
 # Operating System security
 
-:::image type="content" source="images\operating-system.png" alt-text="Diagram of containng a list of security features." lightbox="images\operating-system.png" border="false":::
+:::image type="content" source="images\operating-system-on.png" alt-text="Diagram of containng a list of security features." lightbox="images\operating-system.png" border="false":::
 
 Windows 11 is the most secure Windows yet with extensive security measures in the operating system designed to help keep devices, identities, and information safe. These measures include built-in advanced encryption and data protection, robust network system security, and intelligent safeguards against ever-evolving viruses and threats.
 

windows/security/book/security-foundations.md

@@ -7,7 +7,7 @@ ms.date: 04/09/2024
 
 # Security foundations
 
-:::image type="content" source="images\security-foundations.png" alt-text="Diagram of containng a list of security features." lightbox="images\security-foundations.png" border="false":::
+:::image type="content" source="images\security-foundations-on.png" alt-text="Diagram of containng a list of security features." lightbox="images\security-foundations.png" border="false":::
 
 > [!div class="nextstepaction"]
 > [Conclusion >](conclusion.md)