What should the security engineer do to meet these requirements?
Use AWS Resource Access Manager (AWS RAM) to monitor the AWS CloudTrail configuration. Send notifications using Amazon SNS.
Create an Amazon CloudWatch Events rule to monitor Amazon GuardDuty findings. Send email notifications using Amazon SNS.
Update security contact details in AWS account settings for AWS Support to send alerts when suspicious activity is detected.
Use Amazon Inspector to automatically detect security issues. Send alerts using Amazon SNS.
Explanations:
AWS Resource Access Manager (AWS RAM) is not designed for monitoring configuration changes. It is primarily used for sharing resources across accounts. Therefore, it will not be effective for detecting changes to the AWS CloudTrail configuration.
Creating an Amazon CloudWatch Events rule to monitor changes to the CloudTrail configuration can effectively detect modifications. When a change occurs, the rule can trigger an action to send notifications through Amazon SNS, thus alerting relevant personnel of any configuration changes.
Updating security contact details in AWS account settings for AWS Support does not provide real-time alerts for changes to CloudTrail configuration. This option is reactive rather than proactive, as it does not monitor or notify about changes in configuration.
Amazon Inspector is focused on assessing the security posture of applications and infrastructure, not specifically for monitoring changes to configurations like AWS CloudTrail. It will not provide alerts for changes to CloudTrail settings.
In my experience, the answer is:
Create an Amazon CloudWatch Events rule to monitor Amazon GuardDuty findings. Send email notifications using Amazon SNS.