> For the complete documentation index, see [llms.txt](https://fusionauth.io/docs/llms.txt)

# Breach | FusionAuth Docs

Learn about the User Password Breach event.

# Breach

[Edit on GitHub](https://github.com/FusionAuth/fusionauth-site/blob/main/astro/src/content/docs/extend/events-and-webhooks/events/user/password/user-password-breach.mdx)

[View Markdown](https://fusionauth.io/docs/extend/events-and-webhooks/events/user/password/user-password-breach.md)

## User Password Breach

This feature is only available in paid plans. To learn more, see [our pricing page](https://fusionauth.io/pricing.md).

This event has been available since 1.15.0

This event is generated when Reactor detects a user is using a vulnerable, or breached password. This event will only occur during login when the Tenant is not configured to require the user to change their password. All other breached password detections will occur during password validation and because the user will not be allowed to use the password.

Event type

user.password.breach

### Event Scope

This is a tenant scoped event.

Prior to version `1.37.0` this event was sent to all webhooks, and it was a webhook's responsibility to filter on the **tenantId** field.

In version `1.37.0` and later, this event will only be sent to tenants for which webhooks for this event are enabled.

### Transaction Compatibility

This event is transactional. The final state of the operation which caused the webhook is not persisted to FusionAuth until after the webhook finishes; [learn more](https://fusionauth.io/docs/extend/events-and-webhooks/writing-a-webhook.md#calling-fusionauth-apis-in-webhooks)

### Event Body

`event.createInstant`Long

The [instant](https://fusionauth.io/docs/reference/data-types.md#instants) that the event was generated.

`event.id`UUID

The unique Id of the event. You may receive an event more than once based upon your transaction settings. This Id may be used to identify a duplicate event.

`event.info.data`ObjectAvailable since 1.30.0

An object that can hold any information about the event that should be persisted.

`event.info.deviceDescription`StringAvailable since 1.30.0

The description of the device associated with the event.

`event.info.deviceName`StringAvailable since 1.30.0

The device name associated with the event.

`event.info.deviceType`StringAvailable since 1.30.0

The type of device associated with the event.

`event.info.ipAddress`StringAvailable since 1.27.0

The source IP address of the event.

`event.info.location.city`StringAvailable since 1.30.0

The city where the event originated.

**Note:** To use event location data, you'll need an Enterprise plan.

`event.info.location.country`StringAvailable since 1.30.0

The country where the event originated.

**Note:** To use event location data, you'll need an Enterprise plan.

`event.info.location.latitude`DoubleAvailable since 1.30.0

The latitude where the event originated.

**Note:** To use event location data, you'll need an Enterprise plan.

`event.info.location.longitude`DoubleAvailable since 1.30.0

The longitude where the event originated.

**Note:** To use event location data, you'll need an Enterprise plan.

`event.info.location.region`StringAvailable since 1.30.0

The geographic location where the event originated.

**Note:** To use event location data, you'll need an Enterprise plan.

`event.info.location.zipcode`StringAvailable since 1.30.0

The zip code where the event originated.

**Note:** To use event location data, you'll need an Enterprise plan.

`event.info.os`StringAvailable since 1.30.0

The operating system associated with the event.

`event.info.userAgent`StringAvailable since 1.30.0

The user agent associated with the event.

`event.linkedObjectId`UUIDAvailable since 1.53.0

The Id of the user impacted by this event.

`event.tenantId`UUID

The unique tenant identifier. This value may not be returned if not applicable.

`event.type`String

The event type, this value will always be `user.password.breach`.

`event.user`Object

The user that failed the login request. See the [Users API](https://fusionauth.io/docs/apis/users.md) for property definitions and example JSON.

*Example Event JSON*

```json
{
  "event": {
    "createInstant": 1505762615056,
    "id": "e502168a-b469-45d9-a079-fd45f83e0406",
    "tenantId": "e872a880-b14f-6d62-c312-cb40f22af465",
    "type": "user.password.breach",
    "user": {
      "active": true,
      "connectorId": "e3306678-a53a-4964-9040-1c96f36dda72",
      "email": "example@fusionauth.io",
      "id": "00000000-0000-0001-0000-000000000000",
      "breachedPasswordStatus": "ExactMatch",
      "breachedPasswordLastCheckedInstant": 1505762615056,
      "passwordChangeReason": "Breached",
      "passwordChangeRequired": true,
      "registrations": [
        {
          "applicationId": "10000000-0000-0002-0000-000000000001",
          "id": "00000000-0000-0002-0000-000000000000",
          "insertInstant": 1446064706250,
          "roles": [
            "user"
          ],
          "usernameStatus": "ACTIVE"
        }
      ],
      "tenantId": "f24aca2b-ce4a-4dad-951a-c9d690e71415",
      "twoFactorEnabled": false,
      "usernameStatus": "ACTIVE",
      "verified": true
    }
  }
}
```