diff --git a/content/posts/macos/macOS Security Overview.md b/content/posts/macos/macOS Security Overview.md
index d4f9fcc..2f58a01 100644
--- a/content/posts/macos/macOS Security Overview.md	
+++ b/content/posts/macos/macOS Security Overview.md	
@@ -177,4 +177,6 @@ If you choose to backup your Mac, you should do so with [Time Machine](https://s
 
 ## Encrypted Disk Image
 
-In macOS, if you want to encrypt some files you should create an [encrypted disk image](https://support.apple.com/guide/disk-utility/create-a-disk-image-dskutl11888/mac#dsku7bb3d28c) to store them in using Disk Utility.
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+In macOS, if you want to encrypt some files you should create an [encrypted disk image](https://support.apple.com/guide/disk-utility/create-a-disk-image-dskutl11888/mac#dsku7bb3d28c) to store them in using Disk Utility.
+
+You can also [add a checksum](https://support.apple.com/guide/disk-utility/add-a-checksum-to-a-disk-image-dskutl1019/22..6/mac/14.0) and [verify it later](https://support.apple.com/guide/disk-utility/verify-a-disk-images-data-corrupted-utility-dskutl15186/22..6/mac/14.0) to ensure data integrity.
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