title: Get alerts API description: Learn about the methods and properties of the Alert resource type in Microsoft Defender for Endpoint. ms.service: defender-endpoint ms.author: painbar author: paulinbar ms.localizationpriority: medium manager: bagol audience: ITPro ms.collection:
- m365-security
- tier1
- must-keep
ms.topic: reference
ms.subservice: reference
ms.custom: api
search.appverid: met150
ms.date: 11/11/2025
appliesto:
- Microsoft Defender for Endpoint Plan 2
- Microsoft Defender for Business
For the full available Alerts API experience across all Microsoft Defenders' products, visit: Use the Microsoft Graph security API - Microsoft Graph | Microsoft Learn.
| Property | Type | Description |
|---|---|---|
| ID | String | Alert ID. |
| title | String | Alert title. |
| description | String | Alert description. |
| alertCreationTime | Nullable DateTimeOffset | The date and time (in UTC) the alert was created. |
| lastEventTime | Nullable DateTimeOffset | The last occurrence of the event that triggered the alert on the same device. |
| firstEventTime | Nullable DateTimeOffset | The first occurrence of the event that triggered the alert on that device. |
| lastUpdateTime | Nullable DateTimeOffset | The date and time (in UTC) the alert was last updated. |
| resolvedTime | Nullable DateTimeOffset | The date and time in which the status of the alert was changed to Resolved. |
| incidentId | Nullable Long | The Incident ID of the Alert. |
| investigationId | Nullable Long | The Investigation ID related to the Alert. |
| investigationState | Nullable Enum | The current state of the Investigation. Possible values are: Unknown, Terminated, SuccessfullyRemediated, Benign, Failed, PartiallyRemediated, Running, PendingApproval, PendingResource, PartiallyInvestigated, TerminatedByUser, TerminatedBySystem, Queued, InnerFailure, PreexistingAlert, UnsupportedOs, UnsupportedAlertType, SuppressedAlert. |
| assignedTo | String | Owner of the alert. |
| rbacGroupName | String | Role-based access control device group name. |
| mitreTechniques | String | Mitre Enterprise technique ID. |
| relatedUser | String | Details of user related to a specific alert. |
| severity | Enum | Severity of the alert. Possible values are: UnSpecified, Informational, Low, Medium, and High. |
| status | Enum | Specifies the current status of the alert. Possible values are: Unknown, New, InProgress and Resolved. |
| classification | Nullable Enum | Specification of the alert. Possible values are: TruePositive, Informational, expected activity, and FalsePositive. |
| determination | Nullable Enum | Specifies the determination of the alert. Possible determination values for each classification are: Multistage attack (MultiStagedAttack), Malicious user activity (MaliciousUserActivity), Compromised account (CompromisedUser) – consider changing the enum name in public API accordingly, Malware (Malware), Phishing (Phishing), Unwanted software (UnwantedSoftware), and Other (Other). Security test (SecurityTesting), Line-of-business application (LineOfBusinessApplication), Confirmed activity (ConfirmedUserActivity) - consider changing the enum name in public API accordingly, and Other (Other). Not malicious (Clean) - consider changing the enum name in public API accordingly, Not enough data to validate (InsufficientData), and Other (Other). |
| category | String | Category of the alert. |
| detectionSource | String | Detection source. |
| threatFamilyName | String | Threat family. |
| threatName | String | Threat name. |
| machineId | String | ID of a machine entity that is associated with the alert. |
| computerDnsName | String | machine fully qualified name. |
| aadTenantId | String | The Microsoft Entra ID. |
| detectorId | String | The ID of the detector that triggered the alert. |
| comments | List of Alert comments | Alert Comment object contains: comment string, createdBy string, and createTime date time. |
| Evidence | List of Alert evidence | Evidence related to the alert. See the following example. |
Note
Around August 29, 2022, previously supported alert determination values (Apt and SecurityPersonnel) will be deprecated and no longer available via the API.
GET https://api.security.microsoft.com/api/alerts/da637472900382838869_1364969609{
"id": "da637472900382838869_1364969609",
"incidentId": 1126093,
"investigationId": null,
"assignedTo": null,
"severity": "Low",
"status": "New",
"classification": null,
"determination": null,
"investigationState": "Queued",
"detectionSource": "WindowsDefenderAtp",
"detectorId": "17e10bbc-3a68-474a-8aad-faef14d43952",
"category": "Execution",
"threatFamilyName": null,
"title": "Low-reputation arbitrary code executed by signed executable",
"description": "Binaries signed by Microsoft can be used to run low-reputation arbitrary code. This technique hides the execution of malicious code within a trusted process. As a result, the trusted process might exhibit suspicious behaviors, such as opening a listening port or connecting to a command-and-control (C&C) server.",
"alertCreationTime": "2021-01-26T20:33:57.7220239Z",
"firstEventTime": "2021-01-26T20:31:32.9562661Z",
"lastEventTime": "2021-01-26T20:31:33.0577322Z",
"lastUpdateTime": "2021-01-26T20:33:59.2Z",
"resolvedTime": null,
"machineId": "111e6dd8c833c8a052ea231ec1b19adaf497b625",
"computerDnsName": "temp123.middleeast.corp.microsoft.com",
"rbacGroupName": "A",
"aadTenantId": "a839b112-1253-6432-9bf6-94542403f21c",
"threatName": null,
"mitreTechniques": [
"T1064",
"T1085",
"T1220"
],
"relatedUser": {
"userName": "temp123",
"domainName": "DOMAIN"
},
"comments": [
{
"comment": "test comment for docs",
"createdBy": "[email protected]",
"createdTime": "2021-01-26T01:00:37.8404534Z"
}
],
"evidence": [
{
"entityType": "User",
"evidenceCreationTime": "2021-01-26T20:33:58.42Z",
"sha1": null,
"sha256": null,
"fileName": null,
"filePath": null,
"processId": null,
"processCommandLine": null,
"processCreationTime": null,
"parentProcessId": null,
"parentProcessCreationTime": null,
"parentProcessFileName": null,
"parentProcessFilePath": null,
"ipAddress": null,
"url": null,
"registryKey": null,
"registryHive": null,
"registryValueType": null,
"registryValue": null,
"accountName": "name",
"domainName": "DOMAIN",
"userSid": "S-1-5-21-11111607-1111760036-109187956-75141",
"aadUserId": "11118379-2a59-1111-ac3c-a51eb4a3c627",
"userPrincipalName": "[email protected]",
"detectionStatus": null
},
{
"entityType": "Process",
"evidenceCreationTime": "2021-01-26T20:33:58.6133333Z",
"sha1": "ff836cfb1af40252bd2a2ea843032e99a5b262ed",
"sha256": "a4752c71d81afd3d5865d24ddb11a6b0c615062fcc448d24050c2172d2cbccd6",
"fileName": "rundll32.exe",
"filePath": "C:\\Windows\\SysWOW64",
"processId": 3276,
"processCommandLine": "rundll32.exe c:\\temp\\suspicious.dll,RepeatAfterMe",
"processCreationTime": "2021-01-26T20:31:32.9581596Z",
"parentProcessId": 8420,
"parentProcessCreationTime": "2021-01-26T20:31:32.9004163Z",
"parentProcessFileName": "rundll32.exe",
"parentProcessFilePath": "C:\\Windows\\System32",
"ipAddress": null,
"url": null,
"registryKey": null,
"registryHive": null,
"registryValueType": null,
"registryValue": null,
"accountName": null,
"domainName": null,
"userSid": null,
"aadUserId": null,
"userPrincipalName": null,
"detectionStatus": "Detected"
},
{
"entityType": "File",
"evidenceCreationTime": "2021-01-26T20:33:58.42Z",
"sha1": "8563f95b2f8a284fc99da44500cd51a77c1ff36c",
"sha256": "dc0ade0c95d6db98882bc8fa6707e64353cd6f7767ff48d6a81a6c2aef21c608",
"fileName": "suspicious.dll",
"filePath": "c:\\temp",
"processId": null,
"processCommandLine": null,
"processCreationTime": null,
"parentProcessId": null,
"parentProcessCreationTime": null,
"parentProcessFileName": null,
"parentProcessFilePath": null,
"ipAddress": null,
"url": null,
"registryKey": null,
"registryHive": null,
"registryValueType": null,
"registryValue": null,
"accountName": null,
"domainName": null,
"userSid": null,
"aadUserId": null,
"userPrincipalName": null,
"detectionStatus": "Detected"
}
]
}