Block

CIS - Block high/medium sign-in risk

Block access

About this policy

The CIS - Block high/medium sign-in risk policy blocks access for all users when Entra ID Protection detects a high or medium sign-in risk. Rather than challenging the user with MFA, this policy takes the more cautious approach of denying access outright. It applies across all cloud apps and client types, making it a strong safeguard for environments where any elevated sign-in risk should be treated as a potential breach.

Policy conditions

Users: All users
Apps: All cloud apps
Risk: Sign-in risk: high, medium

JSON template

{
  "templateId": null,
  "displayName": "CIS - Block high/medium sign-in risk",
  "modifiedDateTime": null,
  "state": "enabledForReportingButNotEnforced",
  "deletedDateTime": null,
  "partialEnablementStrategy": null,
  "sessionControls": null,
  "conditions": {
    "userRiskLevels": [],
    "signInRiskLevels": [
      "high",
      "medium"
    ],
    "clientAppTypes": [
      "all"
    ],
    "platforms": null,
    "locations": null,
    "times": null,
    "deviceStates": null,
    "devices": null,
    "clientApplications": null,
    "agents": null,
    "applications": {
      "includeApplications": [
        "All"
      ],
      "excludeApplications": [],
      "includeUserActions": [],
      "includeAuthenticationContextClassReferences": [],
      "applicationFilter": null
    },
    "users": {
      "includeUsers": [
        "All"
      ],
      "excludeUsers": [],
      "includeGroups": [],
      "excludeGroups": [],
      "includeRoles": [],
      "excludeRoles": [],
      "includeGuestsOrExternalUsers": null,
      "excludeGuestsOrExternalUsers": null
    }
  },
  "grantControls": {
    "operator": "OR",
    "builtInControls": [
      "block"
    ],
    "customAuthenticationFactors": [],
    "termsOfUse": [],
    "authenticationStrength@odata.context": "https://graph.microsoft.com/beta/$metadata#identity/conditionalAccess/policies('8eb2b39a-5b7f-48ec-96bc-5101d59deb60')/grantControls/authenticationStrength/$entity",
    "authenticationStrength": null
  },
  "Tag": "CIS",
  "summary": "The CIS - Block high/medium sign-in risk policy blocks access for all users when Entra ID Protection detects a high or medium sign-in risk. Rather than challenging the user with MFA, this policy takes the more cautious approach of denying access outright. It applies across all cloud apps and client types, making it a strong safeguard for environments where any elevated sign-in risk should be treated as a potential breach."
}