1---2name: azure-defender-for-iot3description: Expert knowledge for Azure Defender For Iot development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when configuring OT sensors/micro agents, traffic mirroring, Zero Trust OT monitoring, SIEM/SOAR integrations, or OT network design, and other Azure Defender For Iot related development tasks. Not for Azure Defender For Cloud (use azure-defender-for-cloud), Azure Security (use azure-security), Azure IoT (use azure-iot), Azure IoT Hub (use azure-iot-hub).4---5# Azure Defender For Iot Skill
6
7This skill provides expert guidance for Azure Defender For Iot. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.
8
9## How to Use This Skill
10
11> **IMPORTANT for Agent**: Use the **Category Index** below to locate relevant sections. For categories with line ranges (e.g., `L35-L120`), use `read_file` with the specified lines. For categories with file links (e.g., `[security.md](security.md)`), use `read_file` on the linked reference file
12
13> **IMPORTANT for Agent**: If `metadata.generated_at` is more than 3 months old, suggest the user pull the latest version from the repository. If `mcp_microsoftdocs` tools are not available, suggest the user install it: [Installation Guide](https://github.com/MicrosoftDocs/mcp/blob/main/README.md)
14
15This skill requires **network access** to fetch documentation content:
16- **Preferred**: Use `mcp_microsoftdocs:microsoft_docs_fetch` with query string `from=learn-agent-skill`. Returns Markdown.
17- **Fallback**: Use `fetch_webpage` with query string `from=learn-agent-skill&accept=text/markdown`. Returns Markdown.
18
19## Category Index
20
21| Category | Lines | Description |
22|----------|-------|-------------|
23| Troubleshooting | L37-L46 | Diagnosing and resolving Defender for IoT issues: CIS benchmark findings, micro agent problems, OT sensor installation/health, and understanding alert types and sensor health messages. |
24| Best Practices | L47-L54 | Designing OT monitoring architectures, placing sensors, tuning OT alert workflows, and investigating OT controller/programming changes with Defender for IoT |
25| Decision Making | L55-L67 | Guidance for planning and choosing Defender for IoT deployment options: OT traffic mirroring methods, appliance selection, licensing/billing, micro agent and console retirement, and version/support tracking. |
26| Architecture & Design Patterns | L68-L74 | OT network architectures for connecting sensors to Azure, sample connectivity models, and mapping Defender for IoT components to Purdue OT network layers. |
27| Limits & Quotas | L75-L85 | Data residency, retention limits, networking/port requirements, supported OT/virtual appliances, and version/feature lifecycle details for Defender for IoT deployments. |
28| Security | L86-L105 | Security alerts, recommendations, roles, RBAC, SSO, certificates, and sensor auth for securing Defender for IoT hubs, OT sensors, and monitoring OT networks with Zero Trust. |
29| Configuration | L106-L134 | Configuring Defender for IoT micro agents and OT sensors, including installation, tuning, dependencies, alerting, monitoring, metadata import, networking, proxies, firewalls, and integrations. |
30| Integrations & Coding Patterns | L135-L165 | Integrating Defender for IoT with APIs, SIEM/SOAR, firewalls, OT tools, and configuring traffic mirroring and scripts for alert, inventory, and vulnerability data handling. |
31| Deployment | L166-L192 | Deploying and managing Defender for IoT sensors and micro agents, including hardware/VM appliance setup, traffic mirroring, upgrades, backups, region moves, and hybrid/air-gapped deployments. |
32
33### Troubleshooting
34| Topic | URL |
35|-------|-----|
36| Investigate CIS benchmark findings in Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-investigate-cis-benchmark |
37| Troubleshoot Defender for IoT micro agent issues | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/troubleshoot-defender-micro-agent |
38| Reference Microsoft Defender for IoT alert types | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/alert-engine-messages |
39| Troubleshoot Microsoft Defender for IoT OT sensors | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-troubleshoot-sensor |
40| Validate Defender for IoT OT sensor software installation | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/post-install-validation-ot-software |
41| Interpret Defender for IoT sensor health messages | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/sensor-health-messages |
42
43### Best Practices
44| Topic | URL |
45|-------|-----|
46| Plan OT monitoring architecture with Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/plan-corporate-monitoring |
47| Prepare OT sites and sensor placement for Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/plan-prepare-deploy |
48| Optimize Defender for IoT OT alert workflows | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-accelerate-alert-incident-response |
49| Investigate OT programming changes with Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-analyze-programming-details-changes |
50
51### Decision Making
52| Topic | URL |
53|-------|-----|
54| Choose OT traffic mirroring methods for Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/traffic-mirroring-methods |
55| Decide between SPAN, RSPAN, ERSPAN for OT mirroring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/traffic-mirroring-methods |
56| Plan Defender for IoT billing and site licensing | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/billing |
57| Choose and manage Defender for IoT licenses | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/license-and-trial-license-extention |
58| Determine Defender for IoT EIoT licensing needs | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/manage-subscriptions-enterprise |
59| Select appropriate OT appliances for Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-appliance-sizing |
60| Plan for Defender for IoT on-premises console retirement | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/on-premises-management-console-retirement |
61| Plan transition from on-premises to cloud Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/transition-on-premises-management-console-to-cloud |
62| Track Defender for IoT OT software versions and support | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/release-notes |
63
64### Architecture & Design Patterns
65| Topic | URL |
66|-------|-----|
67| Select architectures to connect OT sensors to Azure | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/architecture-connections |
68| Use sample OT network connectivity models for sensors | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/sample-connectivity-models |
69| Map Defender for IoT to Purdue OT network layers | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/understand-network-architecture |
70
71### Limits & Quotas
72| Topic | URL |
73|-------|-----|
74| Understand Defender for IoT data residency mapping | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-data-processing |
75| Review Defender for IoT micro agent feature lifecycle | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/edge-security-module-deprecation |
76| Networking requirements and ports for Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/networking-requirements |
77| Review catalog of preconfigured OT monitoring appliances | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-pre-configured-appliances |
78| Check system requirements for virtual OT appliances | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-virtual-appliances |
79| Understand Defender for IoT data retention limits | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/references-data-retention |
80| Review archived Defender for IoT OT sensor versions | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/release-notes-ot-monitoring-sensor-archive |
81
82### Security
83| Topic | URL |
84|-------|-----|
85| Use Defender micro agent built-in security alerts | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-agent-based-security-alerts |
86| Define custom Defender for IoT Hub alerts | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-customizable-security-alerts |
87| Apply Defender for IoT Hub security recommendations | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-recommendations |
88| Use Defender for IoT Hub built-in alerts | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-security-alerts |
89| Use ThreadX micro agent alerts and recommendations | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-threadx-security-alerts-recommendations |
90| Call Defender for IoT sensor authentication APIs | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/api/sensor-auth-apis |
91| Meet SSL/TLS certificate requirements for OT sensors | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/best-practices/certificate-requirements |
92| Manage Defender for IoT users and roles | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/manage-users-overview |
93| Configure Azure user permissions for Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/manage-users-portal |
94| Configure and manage OT sensor user access | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/manage-users-sensor |
95| Apply Zero Trust monitoring to OT networks with Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/monitor-zero-trust |
96| Create CA-signed SSL/TLS certificates for OT sensors | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/create-ssl-certificates |
97| Map Azure RBAC roles to Defender for IoT actions | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/roles-azure |
98| Configure on-premises Defender for IoT user roles | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/roles-on-premises |
99| Set up Entra ID SSO for IoT sensor console | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/set-up-sso |
100| Audit Defender for IoT user activity and access | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/track-user-activity |
101
102### Configuration
103| Topic | URL |
104|-------|-----|
105| Configure Defender for IoT micro agent behavior | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-micro-agent-configuration |
106| Review Linux OS dependencies for Defender micro agent | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/concept-micro-agent-linux-dependencies |
107| Configure PAM to audit device sign-in events | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/configure-pam-to-audit-sign-in-events |
108| Configure Defender for IoT DMI decoder on devices | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-configure-dmi-decoder |
109| Configure Defender IoT micro agent twin properties | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-configure-micro-agent-twin |
110| Install and authenticate Defender IoT micro agent on Edge | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-install-micro-agent-for-edge |
111| Tune Defender IoT micro agent for Eclipse ThreadX | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-threadx-security-module |
112| Create and assign custom Defender IoT alerts | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/quickstart-create-custom-alerts |
113| Use Defender for IoT OT sensor CLI commands | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/cli-ot-sensor |
114| Set up active monitoring methods for OT networks | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/configure-active-monitoring |
115| Configure reverse DNS lookup in Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/configure-reverse-dns-lookup |
116| Bulk-manage OT sensor settings via Azure portal | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/configure-sensor-settings-portal |
117| Configure Windows Endpoint Monitoring for OT sensors | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/configure-windows-endpoint-monitoring |
118| Configure Defender for IoT OT sensor proxy settings | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/connect-sensors |
119| Configure local script to enrich Windows endpoint data | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/detect-windows-endpoints-script |
120| Enable enterprise IoT security in Defender for Endpoint | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/eiot-defender-for-endpoint |
121| Configure OT plans and sensors in Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/getting-started |
122| Configure OT alert forwarding to external systems | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-forward-alert-information-to-partners |
123| Import and map OT device metadata into Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-import-device-information |
124| Maintain and configure OT network sensors via GUI | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-manage-individual-sensors |
125| Configure SNMP MIB health monitoring for OT sensors | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-set-up-snmp-mib-monitoring |
126| Manage threat intelligence packages on OT sensors | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-work-with-threat-intelligence-packages |
127| Onboard OT sensors to Defender for IoT in Azure | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/onboard-sensors |
128| Configure and activate Microsoft Defender for IoT OT sensors | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/activate-deploy-sensor |
129| Configure firewall endpoints for Defender for IoT OT sensors | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/provision-cloud-management |
130
131### Integrations & Coding Patterns
132| Topic | URL |
133|-------|-----|
134| Use Defender micro agent API for Eclipse ThreadX | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/threadx-security-module-api |
135| Manage OT sensor alerts using Defender for IoT APIs | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/api/sensor-alert-apis |
136| Manage OT sensor inventory via Defender for IoT APIs | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/api/sensor-inventory-apis |
137| Access OT vulnerability data via Defender for IoT APIs | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/api/sensor-vulnerability-apis |
138| Automate OT sensor disconnection alerts with Sentinel playbooks | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/automate-sensor-disconnection-alerts |
139| Choose and configure Defender for IoT partner integrations | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrate-overview |
140| Integrate ArcSight with Defender for IoT alert forwarding | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/arcsight |
141| Send Defender for IoT alerts to LogRhythm SIEM | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/logrhythm |
142| Integrate RSA NetWitness with Defender for IoT alerts | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/netwitness |
143| Connect OT Defender for IoT sensors to Microsoft Sentinel (legacy) | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/on-premises-sentinel |
144| Stream Defender for IoT cloud alerts to third-party SIEMs | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/send-cloud-data-to-partners |
145| Configure legacy ServiceNow integration for Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/integrations/service-now-legacy |
146| Use Sentinel solution to investigate Defender for IoT threats | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/iot-advanced-threat-monitoring |
147| Connect Defender for IoT with Microsoft Sentinel via data connector | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/iot-solution |
148| Integrate with Microsoft Defender for IoT REST APIs | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/references-work-with-defender-for-iot-apis |
149| Configure Cisco ERSPAN for Defender for IoT sensors | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/configure-mirror-erspan |
150| Use ESXi vSwitch promiscuous mode for OT traffic mirroring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/configure-mirror-esxi |
151| Use Hyper-V vSwitch promiscuous mode for OT mirroring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/configure-mirror-hyper-v |
152| Configure Cisco RSPAN mirroring for OT monitoring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/configure-mirror-rspan |
153| Configure Cisco SPAN ports for Defender for IoT traffic mirroring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/configure-mirror-span |
154| Integrate CyberArk with Defender for IoT for credential security | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-cyberark |
155| Integrate Forescout with Defender for IoT for OT visibility | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-forescout |
156| Integrate Fortinet firewalls with Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-fortinet |
157| Integrate Palo Alto firewalls with Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-palo-alto |
158| Integrate IBM QRadar with Defender for IoT alerts | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-qradar |
159| Integrate ServiceNow Operational Technology Manager with Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-servicenow |
160| Integrate Defender for IoT OT data with Splunk | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/tutorial-splunk |
161
162### Deployment
163| Topic | URL |
164|-------|-----|
165| Provision Defender IoT micro agent via DPS with X.509 | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-provision-micro-agent |
166| Move Defender for IoT iotSecuritySolutions resource across regions | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/how-to-region-move |
167| Upgrade Defender for IoT micro agent on Linux devices | https://learn.microsoft.com/en-us/azure/defender-for-iot/device-builders/upgrade-micro-agent |
168| Select and use OT monitoring appliances for Defender for IoT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/ |
169| Deploy Dell PowerEdge R350 for OT sensor monitoring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/dell-poweredge-r350-e1800 |
170| Deploy Dell PowerEdge R360 for OT sensor monitoring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/dell-poweredge-r360-e1800 |
171| Deploy Dell PowerEdge R660 for OT sensor monitoring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/dell-poweredge-r660 |
172| Deploy Heptagon YB3x appliance for OT monitoring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/heptagon-yb3x |
173| Use HPE ProLiant DL20 Gen 11 (4SFF) for OT monitoring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl20-gen-11 |
174| Use HPE ProLiant DL20 Gen 11 (2LFF) for OT monitoring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl20-gen-11-nhp-2lff |
175| Use legacy HPE ProLiant DL20 for enterprise OT monitoring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl20-legacy |
176| Use HPE ProLiant DL20 Gen10 Plus for enterprise OT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl20-plus-enterprise |
177| Use HPE ProLiant DL20 Gen10 Plus (2LFF) for SMB OT | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl20-plus-smb |
178| Deploy Defender for IoT on HPE ProLiant DL360 | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl360 |
179| Deploy Defender for IoT on HPE ProLiant DL360 Gen 11 | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/hpe-proliant-dl360-gen11 |
180| Deploy Defender for IoT OT sensor VM on Hyper-V Gen 2 | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/virtual-sensor-hyper-v |
181| Deploy Defender for IoT OT sensor VM on VMware ESXi | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/virtual-sensor-vmware |
182| Deploy YS-techsystems YS-FIT2 for OT monitoring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/appliance-catalog/ys-techsystems-ys-fit2 |
183| Back up and restore Defender for IoT OT sensors | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/back-up-restore-sensor |
184| Plan hybrid or air-gapped Defender for IoT deployments | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/air-gapped-deploy |
185| Install and initially configure Defender for IoT OT sensor software | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/install-software-ot-sensor |
186| Deploy Defender for IoT for OT monitoring environments | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/ot-deploy/ot-deploy-path |
187| Deploy Defender for IoT OT sensor traffic mirroring | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/traffic-mirroring/set-up-traffic-mirroring |
188| Update Defender for IoT OT sensor software versions | https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/update-ot-software |
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