Permissions - Amazon IoT Core
Give Amazon IoT Device Defender detect permission to publish alarms to an SNS topic
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Permissions

This section contains information about how to set up the IAM roles and policies required to manage Amazon IoT Device Defender Detect. For more information, see the IAM User Guide.

Give Amazon IoT Device Defender detect permission to publish alarms to an SNS topic

If you use the alertTargets parameter in CreateSecurityProfile, you must specify an IAM role with two policies: a permissions policy and a trust policy. The permissions policy grants permission to Amazon IoT Device Defender to publish notifications to your SNS topic. The trust policy grants Amazon IoT Device Defender permission to assume the required role.

{
  "Version":"2012-10-17",
  "Statement":[
      {
        "Effect":"Allow",
        "Action":[
          "sns:Publish"
        ],
        "Resource":[
          "arn:aws:sns:region:account-id:your-topic-name"
        ]
    }
  ]
}
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "",
      "Effect": "Allow",
      "Principal": {
        "Service": "iot.amazonaws.com"
      },
      "Action": "sts:AssumeRole"
    }
  ]
}

You also need an IAM permissions policy attached to the IAM user that allows the user to pass roles. See Granting a User Permissions to Pass a Role to an Amazon Service.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "",
      "Effect": "Allow",
      "Action": [
          "iam:GetRole",
          "iam:PassRole"
      ],
      "Resource": "arn:aws:iam::account-id:role/Role_To_Pass"
    }
  ]
}