Enhanced Read Only IAM policy (to be added alongside "arn:aws:iam::aws:policy/ReadOnlyAccess")

policy.json

 {
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Deny",
      "Action": [
        "cloudformation:GetTemplate",
        "dynamodb:GetItem",
        "dynamodb:BatchGetItem",
        "dynamodb:Query",
        "dynamodb:Scan",
        "ec2:GetConsoleOutput",
        "ec2:GetConsoleScreenshot",
        "ecr:BatchGetImage",
        "ecr:GetAuthorizationToken",
        "ecr:GetDownloadUrlForLayer",
        "kinesis:Get*",
        "lambda:GetFunction",
        "logs:GetLogEvents",
        "s3:GetObject",
        "sdb:Select*",
        "sqs:ReceiveMessage"
      ],
      "Resource": "*"
    }
  ]
}