windows-itpro-docs/windows/security/threat-protection/microsoft-defender-atp/update-alert.md

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Get alert information by ID API	Retrieves an alert by its ID.	apis, graph api, supported apis, get, alert, information, id	eADQiWindows 10XVcnh	w10	deploy	library	security	macapara	mjcaparas	medium	dansimp	ITPro	M365-security-compliance	article

Update alert

Applies to:

• Microsoft Defender Advanced Threat Protection (Microsoft Defender ATP)

Update the properties of an alert entity.

Permissions

One of the following permissions is required to call this API. To learn more, including how to choose permissions, see Use Microsoft Defender ATP APIs

Permission type	Permission	Permission display name
Application	Alerts.ReadWrite.All	'Read and write all alerts'
Delegated (work or school account)	Alert.ReadWrite	'Read and write alerts'

Note

When obtaining a token using user credentials:

• The user needs to have at least the following role permission: 'Alerts investigation' (See Create and manage roles for more information)
• The user needs to have access to the machine associated with the alert, based on machine group settings (See Create and manage machine groups for more information)

HTTP request

PATCH /api/alerts/{id}

Request headers

Name	Type	Description
Authorization	String	Bearer {token}. Required.
Content-Type	String	application/json. Required.

Request body

In the request body, supply the values for the relevant fields that should be updated. Existing properties that are not included in the request body will maintain their previous values or be recalculated based on changes to other property values. For best performance you shouldn't include existing values that haven't change.

Property	Type	Description
status	String	Specifies the current status of the alert. The property values are: 'New', 'InProgress' and 'Resolved'.
assignedTo	String	Owner of the alert
classification	String	Specifies the specification of the alert. The property values are: 'Unknown', 'FalsePositive', 'TruePositive'.
determination	String	Specifies the determination of the alert. The property values are: 'NotAvailable', 'Apt', 'Malware', 'SecurityPersonnel', 'SecurityTesting', 'UnwantedSoftware', 'Other'

[!includeImprove request performance]

Response

If successful, this method returns 200 OK, and the alert entity in the response body with the updated properties. If alert with the specified id was not found - 404 Not Found.

Example

Request

Here is an example of the request.

PATCH https://api.securitycenter.windows.com/api/alerts/121688558380765161_2136280442
Content-Type: application/json
{
	"assignedTo": "secop2@contoso.com"
}

Response

Here is an example of the response.

{
    "@odata.context": "https://api.securitycenter.windows.com/api/$metadata#Alerts/$entity",
    "id": "121688558380765161_2136280442",
	"incidentId": 7696,
	"assignedTo": "secop2@contoso.com",
	"severity": "High",
	"status": "New",
	"classification": "TruePositive",
	"determination": "Malware",
	"investigationState": "Running",
	"category": "MalwareDownload",
	"detectionSource": "WindowsDefenderAv",
	"threatFamilyName": "Mikatz",
	"title": "Windows Defender AV detected 'Mikatz', high-severity malware",
	"description": "Some description",
	"alertCreationTime": "2018-11-26T16:19:21.8409809Z",
	"firstEventTime": "2018-11-26T16:17:50.0948658Z",
	"lastEventTime": "2018-11-26T16:18:01.809871Z",
	"resolvedTime": null,
	"machineId": "9d80fbbc1bdbc5ce968f1d37c72384cbe17ee337"
}