Netskope - DLP Incident Spike

let dlpIncidentThreshold = 10;
NetskopeAlertEvents_CL
| where TimeGenerated > ago(1h)
| where AlertType =~ "DLP" or isnotempty(DlpProfile) or isnotempty(DlpIncidentId)
| summarize
    IncidentCount = count(),
    DistinctIncidents = dcount(DlpIncidentId),
    Profiles = make_set(DlpProfile, 20),
    Rules = make_set(DlpRule, 20),
    Applications = make_set(App, 20),
    Files = make_set(DlpFile, 20),
    Activities = make_set(Activity, 10),
    Actions = make_set(Action, 10),
    FirstSeen = min(TimeGenerated),
    LastSeen = max(TimeGenerated)
    by User, Userip, Hostname
| where IncidentCount > dlpIncidentThreshold
| order by IncidentCount desc
| project
    LastSeen,
    User,
    Userip,
    Hostname,
    IncidentCount,
    DistinctIncidents,
    Profiles,
    Rules,
    Applications,
    Files,
    Activities,
    Actions,
    FirstSeen

name: Netskope - DLP Incident Spike
triggerOperator: gt
query: |
  let dlpIncidentThreshold = 10;
  NetskopeAlertEvents_CL
  | where TimeGenerated > ago(1h)
  | where AlertType =~ "DLP" or isnotempty(DlpProfile) or isnotempty(DlpIncidentId)
  | summarize
      IncidentCount = count(),
      DistinctIncidents = dcount(DlpIncidentId),
      Profiles = make_set(DlpProfile, 20),
      Rules = make_set(DlpRule, 20),
      Applications = make_set(App, 20),
      Files = make_set(DlpFile, 20),
      Activities = make_set(Activity, 10),
      Actions = make_set(Action, 10),
      FirstSeen = min(TimeGenerated),
      LastSeen = max(TimeGenerated)
      by User, Userip, Hostname
  | where IncidentCount > dlpIncidentThreshold
  | order by IncidentCount desc
  | project
      LastSeen,
      User,
      Userip,
      Hostname,
      IncidentCount,
      DistinctIncidents,
      Profiles,
      Rules,
      Applications,
      Files,
      Activities,
      Actions,
      FirstSeen
queryFrequency: 1h
description: |
  Detects a spike in Netskope DLP incidents within a short window. A sudden increase in
  DLP violations for a single user or DLP profile can indicate active data exfiltration,
  a misconfigured policy, or bulk handling of sensitive data. Triggers when a user
  generates more DLP incidents in the last hour than a configurable threshold.
id: c3f8e4d6-0d57-4a3b-9e2c-4f6a8b0d3e52
triggerThreshold: 0
queryPeriod: 1h
version: 1.0.0
kind: Scheduled
status: Available
severity: High
requiredDataConnectors:
- connectorId: NetskopeAlertEventsConnector
  dataTypes:
  - NetskopeAlertEvents_CL
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/NetskopeAlertEvents/Analytic%20Rules/NetskopeAlertEvents_Rule3.yaml
relevantTechniques:
- T1567
- T1530
tactics:
- Exfiltration
- Collection
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: User
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: Userip
  entityType: IP
- fieldMappings:
  - identifier: HostName
    columnName: Hostname
  entityType: Host

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/c3f8e4d6-0d57-4a3b-9e2c-4f6a8b0d3e52')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/c3f8e4d6-0d57-4a3b-9e2c-4f6a8b0d3e52')]",
      "properties": {
        "alertRuleTemplateName": "c3f8e4d6-0d57-4a3b-9e2c-4f6a8b0d3e52",
        "customDetails": null,
        "description": "Detects a spike in Netskope DLP incidents within a short window. A sudden increase in\nDLP violations for a single user or DLP profile can indicate active data exfiltration,\na misconfigured policy, or bulk handling of sensitive data. Triggers when a user\ngenerates more DLP incidents in the last hour than a configurable threshold.\n",
        "displayName": "Netskope - DLP Incident Spike",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "User",
                "identifier": "Name"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "Userip",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "Hostname",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/NetskopeAlertEvents/Analytic%20Rules/NetskopeAlertEvents_Rule3.yaml",
        "query": "let dlpIncidentThreshold = 10;\nNetskopeAlertEvents_CL\n| where TimeGenerated > ago(1h)\n| where AlertType =~ \"DLP\" or isnotempty(DlpProfile) or isnotempty(DlpIncidentId)\n| summarize\n    IncidentCount = count(),\n    DistinctIncidents = dcount(DlpIncidentId),\n    Profiles = make_set(DlpProfile, 20),\n    Rules = make_set(DlpRule, 20),\n    Applications = make_set(App, 20),\n    Files = make_set(DlpFile, 20),\n    Activities = make_set(Activity, 10),\n    Actions = make_set(Action, 10),\n    FirstSeen = min(TimeGenerated),\n    LastSeen = max(TimeGenerated)\n    by User, Userip, Hostname\n| where IncidentCount > dlpIncidentThreshold\n| order by IncidentCount desc\n| project\n    LastSeen,\n    User,\n    Userip,\n    Hostname,\n    IncidentCount,\n    DistinctIncidents,\n    Profiles,\n    Rules,\n    Applications,\n    Files,\n    Activities,\n    Actions,\n    FirstSeen\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Collection",
          "Exfiltration"
        ],
        "techniques": [
          "T1530",
          "T1567"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}