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CloudWatch Alarms and Event Rules

API Activity without MFA (Multi-Factor Authentication) Alarm

A CloudWatch Alarm that triggers if there is API activity in the account without MFA (Multi-Factor Authentication).

Prerequisites: This Alarm requires CloudTrail enabled, with events sent to a CloudWatch Log Group. See Related Configuration Items for configuration to enable CloudTrail/CloudWatch, or enter the CloudWatch Log Group name under the Metric Filter Configuration section.

Items
3
Size
1.2 KB
Missing Parameters
AWSTemplateFormatVersion: "2010-09-09"
Description: ""
Resources:
  SnsTopicMetricFilterCloudWatchAlarm:
    Type: "AWS::SNS::Topic"
    Properties:
      Subscription:
        - Endpoint: "email@example.com"
          Protocol: "email"
      TopicName: "alarm-action"
  CloudWatchAlarm:
    Type: "AWS::CloudWatch::Alarm"
    Properties:
      AlarmName: "no_mfa_api_activity"
      AlarmDescription: "A CloudWatch Alarm that triggers if there is API activity in the account without MFA (Multi-Factor Authentication)."
      MetricName: "ApiActivityWithoutMFACount"
      Namespace: "CloudTrailMetrics"
      Statistic: "Sum"
      Period: "300"
      EvaluationPeriods: "1"
      Threshold: "1"
      ComparisonOperator: "GreaterThanOrEqualToThreshold"
      AlarmActions:
        - Ref: "SnsTopicMetricFilterCloudWatchAlarm"
      TreatMissingData: "notBreaching"
  MetricFilterCloudWatchAlarm:
    Type: "AWS::Logs::MetricFilter"
    Properties:
      LogGroupName: ""
      FilterPattern: "{ $.userIdentity.sessionContext.attributes.mfaAuthenticated != \"true\" }"
      MetricTransformations:
        - MetricValue: "1"
          MetricNamespace: "CloudTrailMetrics"
          MetricName: "ApiActivityWithoutMFACount"
Parameters: {}
Metadata: {}
Conditions: {}

Actions



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Action Settings

Metric Filter Settings


Alarm Configuration

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