Fix broken Azure blog links in IoT Edge docs

Azure blog URLs without locale prefix (/en-us/) return 404. Fixed in 3 files:
- how-to-provision-devices-at-scale-linux-x509.md: zero-touch provisioning blog link
- how-to-update-iot-edge.md: IoT blog topics link (also updated path from topics/ to category/)
- iot-edge-security-manager.md: 3 blog links (securing intelligent edge, zero-touch, IoT security standards)

Author: jlian

articles/iot-edge/how-to-provision-devices-at-scale-linux-x509.md

@@ -4,7 +4,7 @@ titleSuffix: Azure IoT Edge
 description: Use X.509 certificates to test provisioning devices at scale for Azure IoT Edge with device provisioning service
 author: sethmanheim
 ms.author: sethm
-ms.date: 06/09/2025
+ms.date: 02/24/2026
 ms.topic: how-to
 ms.service: azure-iot-edge
 ms.custom: linux-related-content
@@ -26,7 +26,7 @@ Here are the steps to provision IoT Edge devices using X.509 certificates:
 X.509 certificates let you scale production and simplify device provisioning. Typically, X.509 certificates are arranged in a certificate chain of trust. The chain starts with a self-signed or trusted root certificate, and each certificate in the chain signs the next lower certificate. This pattern creates a delegated chain of trust from the root certificate through each intermediate certificate to the final downstream device certificate installed on a device.
 
 > [!TIP]
-> If your device has a Hardware Security Module (HSM) like a TPM 2.0, store the X.509 keys securely in the HSM. Learn how to implement zero-touch provisioning at scale in [this blueprint](https://azure.microsoft.com/blog/the-blueprint-to-securely-solve-the-elusive-zerotouch-provisioning-of-iot-devices-at-scale) with the [iotedge-tpm2cloud](https://aka.ms/iotedge-tpm2cloud) sample.
+> If your device has a Hardware Security Module (HSM) like a TPM 2.0, store the X.509 keys securely in the HSM. Learn how to implement zero-touch provisioning at scale in [this blueprint](https://azure.microsoft.com/en-us/blog/the-blueprint-to-securely-solve-the-elusive-zerotouch-provisioning-of-iot-devices-at-scale/) with the [iotedge-tpm2cloud](https://aka.ms/iotedge-tpm2cloud) sample.
 
 ## Prerequisites
 

articles/iot-edge/how-to-update-iot-edge.md

@@ -3,7 +3,7 @@ title: Update IoT Edge version on devices
 description: How to update IoT Edge devices to run the latest versions of the security subsystem and the IoT Edge runtime
 author: sethmanheim
 ms.author: sethm
-ms.date: 01/09/2025
+ms.date: 02/24/2026
 ms.topic: how-to
 ms.service: azure-iot-edge
 services: iot-edge
@@ -236,4 +236,4 @@ For more information, see [Troubleshoot your IoT Edge device](troubleshoot.md).
 
 View the latest [Azure IoT Edge releases](https://github.com/Azure/azure-iotedge/releases).
 
-Stay up-to-date with recent updates and announcements in the [Internet of Things blog](https://azure.microsoft.com/blog/topics/internet-of-things/)
+Stay up-to-date with recent updates and announcements in the [Internet of Things blog](https://azure.microsoft.com/en-us/blog/category/internet-of-things/)

articles/iot-edge/iot-edge-security-manager.md

@@ -5,7 +5,7 @@ services: iot-edge
 keywords: security, secure element, enclave, TEE, IoT Edge
 author: sethmanheim
 ms.author: sethm
-ms.date: 06/03/2025
+ms.date: 02/24/2026
 ms.topic: concept-article
 ms.service: azure-iot-edge
 ---
@@ -129,6 +129,6 @@ Create and provision an IoT Edge device with a virtual TPM on [Linux](how-to-pro
 
 Learn more about securing your IoT Edge devices in these blog posts:
 
-* [Securing the intelligent edge](https://azure.microsoft.com/blog/securing-the-intelligent-edge/)
-* [The blueprint to securely solve the elusive zero-touch provisioning of IoT devices at scale](https://azure.microsoft.com/blog/the-blueprint-to-securely-solve-the-elusive-zerotouch-provisioning-of-iot-devices-at-scale/)
-* [Solving IoT device security at scale through standards](https://azure.microsoft.com/blog/solving-iot-device-security-at-scale-through-standards/)
+* [Securing the intelligent edge](https://azure.microsoft.com/en-us/blog/securing-the-intelligent-edge/)
+* [The blueprint to securely solve the elusive zero-touch provisioning of IoT devices at scale](https://azure.microsoft.com/en-us/blog/the-blueprint-to-securely-solve-the-elusive-zerotouch-provisioning-of-iot-devices-at-scale/)
+* [Solving IoT device security at scale through standards](https://azure.microsoft.com/en-us/blog/solving-iot-device-security-at-scale-through-standards/)