AWS Certified DevOps Engineer – Professional — Question 154

A company runs applications in AWS accounts that are in an organization in AWS Organizations. The applications use Amazon EC2 instances and Amazon S3.

The company wants to detect potentially compromised EC2 instances, suspicious network activity, and unusual API activity in its existing AWS accounts and in any AWS accounts that the company creates in the future. When the company detects one of these events, the company wants to use an existing Amazon Simple Notification Service (Amazon SNS) topic to send a notification to its operational support team for investigation and remediation.

Which solution will meet these requirements in accordance with AWS best practices?

Answer options

• A. In the organization's management account, configure an AWS account as the Amazon GuardDuty administrator account. In the GuardDuty administrator account, add the company's existing AWS accounts to GuardDuty as members. In the GuardDuty administrator account, create an Amazon EventBridge (Amazon CloudWatch Events) rule with an event pattern to match GuardDuty events and to forward matching events to the SNS topic.
• B. In the organization's management account, configure Amazon GuardDuty to add newly created AWS accounts by invitation and to send invitations to the existing AWS accounts. Create an AWS CloudFormation stack set that accepts the GuardDuty invitation and creates an Amazon EventBridge (Amazon CloudWatch Events) rule. Configure the rule with an event pattern to match GuardDuty events and to forward matching events to the SNS topic. Configure the CloudFormation stack set to deploy into all AWS accounts in the organization.
• C. In the organization's management account, create an AWS CloudTrail organization trail. Activate the organization trail in all AWS accounts in the organization. Create an SCP that enables VPC Flow Logs in each account in the organization Configure AWS Security Hub for the organization. Create an Amazon EventBridge (Amazon CloudWatch Events) rule with an event pattern to match Security Hub events and to forward matching events to the SNS topic.
• D. In the organization's management account, configure an AWS account as the AWS CloudTrail administrator account. In the CloudTrail administrator account, create a CloudTrail organization trail. Add the company's existing AWS accounts to the organization trail. Create an SCP that enables VPC Flow Logs in each account in the organization. Configure AWS Security Hub for the organization. Create an Amazon EventBridge (Amazon CloudWatch Events) rule with an event pattern to match Security Hub events and to forward matching events to the SNS topic.

Correct answer: B

Explanation

Option B is correct because it leverages Amazon GuardDuty to monitor for security events and utilizes an AWS CloudFormation stack set to ensure that all accounts in the organization are included automatically. The other options either lack comprehensive coverage across accounts or do not utilize GuardDuty effectively in conjunction with SNS notifications.