> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/unique-client-computer-model-was-detected-via-ms-update-protocol.md).

# Unique client computer model was detected via MS-Update protocol

### Synopsis

| Field                | Value                                |
| -------------------- | ------------------------------------ |
| Activation Period    | 14 Days                              |
| Training Period      | 30 Days                              |
| Test Period          | N/A (single event)                   |
| Deduplication Period | 7 Days                               |
| Required Data        | Palo Alto Networks Firewall EAL Logs |
| ATT\&CK Tactic       | Initial Access (TA0001)              |
| ATT\&CK Technique    | Hardware Additions (T1200)           |
| Severity             | Informational                        |

### Description

A unique client computer model was detected via MS-Update protocol.

### Attacker's Goals

* The Windows Server Update Services enable machines to discover and download software updates from a dedicated update server while providing the necessary client characteristics to install the suitable client version and build.
* Characteristics may consist of computer model, BIOS version and architecture.
* A unique computer model in the network may indicate an unauthorized and unmanaged connection to the internal network.

### Investigative actions

* Inspect the legitimacy of the host and its hardware components.
* Verify that this host is not a newly deployed end-point or virtual machine as part of a legitimate IT activity.


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