diff --git a/windows/security/book/introduction.md b/windows/security/book/index.md
similarity index 100%
rename from windows/security/book/introduction.md
rename to windows/security/book/index.md
diff --git a/windows/security/book/index.yml b/windows/security/book/index.yml
deleted file mode 100644
index c4eef0df78..0000000000
--- a/windows/security/book/index.yml
+++ /dev/null
@@ -1,40 +0,0 @@
-### YamlMime:Landing
-
-title: Windows security book
-metadata:
-  ms.topic: landing-page
-  ms.collection:
-    - tier1
-    - essentials-navigation
-  author: paolomatarazzo
-  ms.author: paoloma
-  manager: aaroncz
-  ms.date: 03/12/2024
-
-# linkListType: architecture | concept | deploy | download | get-started | how-to-guide | tutorial | overview | quickstart | reference | sample | tutorial | video | whats-new
-
-landingContent:
-
-  - title: Table of contents
-    linkLists:
-      - linkListType: concept
-        links:
-          - text: Introduction
-            url: introduction.md
-          - text: Hardware security
-            url: hardware-security.md
-          - text: Operating system security
-            url: operating-system-security.md
-          - text: Application security
-            url: application-security.md
-          - text: Identity protection
-            url: identity-protection.md
-          - text: Privacy
-            url: privacy.md
-          - text: Cloud services
-            url: cloud-security.md
-          - text: Security foundations
-            url: security-foundations.md
-          - text: Conclusion
-            url: conclusion.md
-
diff --git a/windows/security/book/toc.yml b/windows/security/book/toc.yml
index 85ece1411c..26c5f8d155 100644
--- a/windows/security/book/toc.yml
+++ b/windows/security/book/toc.yml
@@ -1,15 +1,15 @@
 items:
 - name: Windows security book
-  href: index.yml
-- name: 1. Introduction to Windows security
-  href: introduction.md
-- name: 2. Hardware security
-  href: hardware-security.md
-- name: 3. Operating system security
-  href: operating-system-security.md
-- name: 4. Application security
-  href: application-security.md
-- name: 5. Identity protection
-  href: identity-protection.md
-- name: 6. Cloud security
-  href: cloud-security.md
\ No newline at end of file
+  items:
+  - name: Introduction
+    href: index.md
+  - name: 1. Hardware security
+    href: hardware-security.md
+  - name: 2. Operating system security
+    href: operating-system-security.md
+  - name: 3. Application security
+    href: application-security.md
+  - name: 4. Identity protection
+    href: identity-protection.md
+  - name: 5. Cloud security
+    href: cloud-security.md
\ No newline at end of file