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Your tenant logs contain entries for successful and failed login events including information related to risk assessment scores. These are the same entries as those that can be used in rule context objects. The Adaptive entries have the following structure: 
{
  "date": "2020-06-26T15:12:43.654Z",
  "type": "s",
  "details": {
    "riskAssessment": {
      "confidence": "high",
      "assessments": {
        "UntrustedIP": {
          "confidence": "high",
          "code": "not_found_on_deny_list"
    	},
    	"NewDevice": {
      	  "confidence": "medium",
      	  "code": "partial_match",
          "details": {
            "device": "unknown",
            "useragent": "known",
          }
    	},
    	"ImpossibleTravel": {
      	  "confidence": "high",
      	  "code": "minimal_travel_from_last_login"
    	}
      }
    }
  },
  "description": "Successful login"
}
Here is an example: 
{
  "date": "2020-06-24T20:24:39.412Z",
  "type": "s",
  "description": "Successful login",
  "connection": "Username-Password-Authentication",
  "connection_id": "con_16Tpc6YqlWZ4HCut",
  "client_id": "9ZteveEZ8CqSLtCNXgvhoCJQ0jt2xSxe",
  "client_name": "jwt.io",
  "ip": "10.12.13.1",
  "client_ip": null,
  "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:77.0) Gecko/20100101 Firefox/77.0",
  "details": {
    "prompts": [
      {
        "name": "prompt-authenticate",
        "initiatedAt": null,
        "completedAt": 1593030278513,
        "connection": "Username-Password-Authentication",
        "connection_id": null,
        "strategy": "auth0",
        "identity": "5ee10b1ca85332004e44ce3e",
        "stats": {
          "loginsCount": 66
        },
        "elapsedTime": null
      },
      {
        "name": "login",
        "flow": "universal-login",
        "initiatedAt": 1593030268561,
        "completedAt": 1593030278558,
        "timers": {
          "rules": 336
        },
        "user_id": "auth0|5ee10b1ca85332004e44ce3e",
        "user_name": "user@josh.local.dev.auth0.com",
        "elapsedTime": 9997
      }
    ],
    "initiatedAt": 1593030268550,
    "completedAt": 1593030279374,
    "elapsedTime": 10824,
    "session_id": "dKvR03IjVSNLPaVLqVS-FBuX87z0bBoE",
    "riskAssessment": {
      "confidence": "medium",
      "assessments": {
        "UntrustedIP": {
          "confidence": "high",
          "code": "ip_not_found"
        },
        "NewDevice": {
          "confidence": "medium",
          "code": "match_useragent",
          "details": {
            "device": "unknown",
            "useragent": "known",
          }
        },
        "ImpossibleTravel": {
          "confidence": "low",
          "code": "missing_geoip"
        }
      }
    },
    "stats": {
      "loginsCount": 66
    }
  },
  "hostname": "josh.local.dev.auth0.com",
  "user_id": "auth0|5ee10b1ca85332004e44ce3e",
  "user_name": "user@josh.local.dev.auth0.com",
  "strategy": "auth0",
  "strategy_type": "database"
}

​
Attack protection details

In addition to providing information for rules execution, Auth0 includes adaptive MFA information to your tenant logs. The same data structure that appears in rules appears in the tenant logs: 
{
  "date": "2020-06-26T15:12:43.654Z",
  "type": "s",
  "details": {
	"anomalyDetection": {
  	  "confidence": "high",
  	  "assessments": {
    	    "UntrustedIP": {
      	    "confidence": "high",
      	    "reason": "ip not found",
      	    "code": "ip_not_found"
    	    },
    	    "NewDevice": {
      	    "confidence": "medium",
      	    "reason": "match useragent",
      	    "code": "match_useragent"
    	    },
    	    "ImpossibleTravel": {
      	    "confidence": "high",
      	    "reason": "minimal travel",
      	    "code": "minimal_travel_from_last_login"
    	    }
  	  }
	},
  },
  "description": "Successful login"
}

​
MFA prompt details

When adaptive MFA is enabled, users will be prompted for MFA enrollment on their first login attempt with a low confidence score. An mfa prompt may appear in the login event details. For example: 
{
  "_id": "5ef3bb0a72487a0047c32959",
  "date": "2020-06-24T20:43:54.159Z",
  "type": "s",
  "description": "Successful login",
  "connection": "Username-Password-Authentication",
  "connection_id": "con_16Tpc6YqlWZ4HCut",
  "client_id": "9ZteveEZ8CqSLtCNXgvhoCJQ0jt2xSxe",
  "client_name": "jwt.io",
  "ip": "10.12.13.1",
  "client_ip": null,
  "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:77.0) Gecko/20100101 Firefox/77.0",
  "details": {
    "prompts": [
      {
        "name": "prompt-authenticate",
        "completedAt": 1593031413909,
        "connection": "Username-Password-Authentication",
        "strategy": "auth0",
        "identity": "5ee10b1ca85332004e44ce3e",
        "stats": {
          "loginsCount": 67
        },
        "elapsedTime": null
      },
      {
        "name": "login",
        "flow": "universal-login",
        "initiatedAt": 1593031371948,
        "completedAt": 1593031413953,
        "timers": {
          "rules": 443
        },
        "user_id": "auth0|5ee10b1ca85332004e44ce3e",
        "user_name": "user@josh.local.dev.auth0.com",
        "elapsedTime": 42005
      },
      {
        "name": "mfa",
        "flow": "universal-mfa",
        "initiatedAt": 1593031414863,
        "completedAt": 1593031433795,
        "performed_acr": [
          "http://schemas.openid.net/pape/policies/2007/06/multi-factor"
        ],
        "performed_amr": [
          "mfa"
        ],
        "provider": "guardian",
        "elapsedTime": 18932
      }
    ],
    "initiatedAt": 1593031371938,
    "completedAt": 1593031434151,
    "elapsedTime": 62213,
    "session_id": "ulYRdsS1F4wIKLpUfQDfhyXgKVJqJaEv",
    "riskAssessment": {
      "confidence": "medium",
      "assessments": {
        "UntrustedIP": {
          "confidence": "high",
          "code": "ip_not_found"
        },
        "NewDevice": {
          "confidence": "medium",
          "code": "match_useragent",
          "details": {
            "device": "unknown",
            "useragent": "known",
          }
        },
        "ImpossibleTravel": {
          "confidence": "low",
          "code": "missing_geoip"
        }
      }
    },
    "stats": {
      "loginsCount": 67
    }
  },
  "hostname": "josh.local.dev.auth0.com",
  "user_id": "auth0|5ee10b1ca85332004e44ce3e",
  "user_name": "user@josh.local.dev.auth0.com",
  "strategy": "auth0",
  "strategy_type": "database"
}

​
MFA provider details

Events may appear for certain MFA providers. Here is an example that includes OTP Auth Succeeded event. 
{
  "_id": "5ef3bb0922b43d004844af00",
  "date": "2020-06-24T20:43:53.758Z",
  "type": "gd_auth_succeed",
  "description": "Guardian - Second factor authentication succeed (totp)",
  "ip": "10.12.13.1",
  "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:77.0) Gecko/20100101 Firefox/77.0",
  "details": {
    "request": {
      "method": "POST",
      "path": "/api/totp/configs/josh/authenticators/totp%7Cdev_3KQv6yQ06pLoksIe/verify",
      "query": {},
      "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:77.0) Gecko/20100101 Firefox/77.0",
      "body": {
        "code": "********"
      },
      "ip": "10.12.13.1",
      "auth": {
        "subject": null,
        "strategy": "jwt_api2_internal_token",
        "scopes": [
          "read:authenticators",
          "verify:authenticator"
        ]
      }
    },
    "response": {
      "body": {},
      "statusCode": null
    },
    "authenticator": {
      "id": "totp|dev_3KQv6yQ06pLoksIe",
      "type": "totp"
    },
    "device_id": "v0:45e50ea0-b65b-11ea-9dd7-27e2c7f14291"
  },
  "user_id": "auth0|5ee10b1ca85332004e44ce3e"
}

​
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