Subscription key note update - Immersive Reader

Author: DenKenMSFT

articles/applied-ai-services/immersive-reader/includes/quickstarts/immersive-reader-client-library-csharp.md

@@ -39,6 +39,9 @@ Create a new project in Visual Studio, using the ASP.NET Core Web Application te
 
 Right-click on the project in the _Solution Explorer_ and choose **Manage User Secrets**. This will open a file called _secrets.json_. This file isn't checked into source control. Learn more [here](/aspnet/core/security/app-secrets?tabs=windows). Replace the contents of _secrets.json_ with the following, supplying the values given when you created your Immersive Reader resource.
 
+> [!IMPORTANT]
+> Remember to remove the keys from your code when you're done, and never post them publicly. For production, use a secure way of storing and accessing your credentials like [Azure Key Vault](../../../../key-vault/general/overview.md). See the Cognitive Services [security](../../../../cognitive-services/cognitive-services-security.md) article for more information.
+
 ```json
 {
   "TenantId": "YOUR_TENANT_ID",

articles/applied-ai-services/immersive-reader/includes/quickstarts/immersive-reader-client-library-java-android.md

@@ -51,6 +51,9 @@ Create a new **/assets** folder.
 
  Create a file named **env** inside the assets folder. Add the following names and values, and supply values as appropriate. Don't commit this env file into source control because it contains secrets that shouldn't be made public.
 
+> [!IMPORTANT]
+> Remember to remove the keys from your code when you're done, and never post them publicly. For production, use a secure way of storing and accessing your credentials like [Azure Key Vault](../../../../key-vault/general/overview.md). See the Cognitive Services [security](../../../../cognitive-services/cognitive-services-security.md) article for more information.
+
 ![Create a new env file - Android](../../media/android/java/android-studio-create-env-file.png)
 
 ```text

articles/applied-ai-services/immersive-reader/includes/quickstarts/immersive-reader-client-library-kotlin.md

@@ -49,6 +49,9 @@ Create a new **/assets** folder.
 
  Create a file named **env** inside the assets folder. Add the following names and values, and supply values as appropriate. Don't commit this env file into source control because it contains secrets that shouldn't be made public.
 
+> [!IMPORTANT]
+> Remember to remove the keys from your code when you're done, and never post them publicly. For production, use a secure way of storing and accessing your credentials like [Azure Key Vault](../../../../key-vault/general/overview.md). See the Cognitive Services [security](../../../../cognitive-services/cognitive-services-security.md) article for more information.
+
 ![Create a new env file - Kotlin](../../media/android/kotlin/android-studio-create-env-file.png)
 
 ```text

articles/applied-ai-services/immersive-reader/includes/quickstarts/immersive-reader-client-library-nodejs.md

@@ -55,6 +55,9 @@ npm install axios qs
 Create a new file called _.env_ in the root of your project. Paste the following code into it, supplying the values given when you created your Immersive Reader resource.
 Do not include quotation marks or the "{" and "}" characters.
 
+> [!IMPORTANT]
+> Remember to remove the keys from your code when you're done, and never post them publicly. For production, use a secure way of storing and accessing your credentials like [Azure Key Vault](../../../../key-vault/general/overview.md). See the Cognitive Services [security](../../../../cognitive-services/cognitive-services-security.md) article for more information.
+
 ```text
 TENANT_ID={YOUR_TENANT_ID}
 CLIENT_ID={YOUR_CLIENT_ID}

articles/applied-ai-services/immersive-reader/includes/quickstarts/immersive-reader-client-library-swift.md

@@ -44,6 +44,9 @@ In the **Run** view, click on **Arguments** tab.
 
 In the **Environment Variables** section, add the following names and values, supplying the values given when you created your Immersive Reader resource.
 
+> [!IMPORTANT]
+> Remember to remove the keys from your code when you're done, and never post them publicly. For production, use a secure way of storing and accessing your credentials like [Azure Key Vault](../../../../key-vault/general/overview.md). See the Cognitive Services [security](../../../../cognitive-services/cognitive-services-security.md) article for more information.
+
 ```text
 TENANT_ID=<YOUR_TENANT_ID>
 CLIENT_ID=<YOUR_CLIENT_ID>