SCS-C03 Exam Dumps - AWS Certified Security – Specialty

Amazon GuardDuty is a fully managed, organization-aware threat detection service that continuously analyzes AWS logs such as CloudTrail events, VPC Flow Logs, DNS logs, EKS audit logs, and RDS activity. According to the AWS Certified Security – Specialty Official Study Guide, GuardDuty is designed to operate at scale across AWS Organizations with minimal operational overhead.

By designating a GuardDuty administrator account in the organization’s management account and enabling GuardDuty organization-wide, the company can automatically enable threat detection across hundreds of AWS accounts. Enabling EKS Protection allows GuardDuty to analyze Kubernetes audit logs for suspicious activity, while RDS Protection provides anomaly detection for Amazon Aurora databases.

Options B, C, and D require custom log aggregation, processing, and analytics pipelines, which significantly increase operational effort and maintenance complexity. Amazon Inspector does not analyze logs, Athena-based analysis is manual, and Kinesis plus Lambda requires custom detection logic.

AWS documentation explicitly identifies GuardDuty with AWS Organizations integration as the recommended solution for centralized, automated threat detection across multi-account environments with minimal operational effort.

AWS Certified Security – Specialty Official Study Guide

Amazon GuardDuty User Guide

GuardDuty Organization Administration Documentation

Amazon CloudWatch Logs is designed to collect, store, and analyze log data from ephemeral compute resources such as EC2 instances in Auto Scaling groups. According to the AWS Certified Security – Specialty Study Guide, using the CloudWatch agent to stream logs off instances ensures log durability even when instances are terminated during scale-in events.

CloudWatch Logs Insights provides a fully managed, serverless query engine that enables ad hoc querying, filtering, and aggregation of log data without requiring additional infrastructure. This directly satisfies the requirement to query logs for application sessions and user troubleshooting.

Option A introduces operational risk because logs could be lost between cron executions. Option B requires additional services and data pipelines, increasing cost and complexity. Option E adds storage cost and management overhead and is not necessary for log analytics.

AWS best practices recommend CloudWatch Logs and Logs Insights as the most cost-effective and scalable solution for centralized log retention and analysis in Auto Scaling environments.

Referenced AWS Specialty Documents:

AWS Certified Security – Specialty Official Study Guide

Amazon CloudWatch Logs and Logs Insights

AWS Logging Best Practices

AWS Audit Manager is specifically designed to help organizations continuously audit their AWS usage against compliance frameworks and generate audit-ready reports. According to AWS Certified Security – Specialty documentation, Audit Manager includes AWS managed frameworks for compliance standards, including PCI DSS v4.0.

Audit Manager automatically collects evidence from AWS services such as API Gateway, Lambda, RDS, CloudTrail, and Config, and maps the evidence directly to PCI DSS controls. Importantly, Audit Manager allows compliance teams to upload and attach manual evidence, which is a key requirement in this scenario.

Option C provides visibility into control status but does not support adding manual evidence. Option B evaluates configuration compliance but does not generate formal compliance reports. Option A requires extensive manual effort and is not aligned with PCI reporting workflows.

AWS documentation positions Audit Manager as the authoritative service for compliance reporting and audit evidence management.

Referenced AWS Specialty Documents:

AWS Certified Security – Specialty Official Study Guide

AWS Audit Manager PCI DSS Framework

AWS Compliance Reporting Best Practices

AWS Config provides managed rules that continuously evaluate resource configurations against compliance requirements. The AWS Certified Security – Specialty documentation highlights AWS Config managed rules as the preferred mechanism for enforcing configuration compliance at scale. The managed rule for encrypted RDS storage automatically detects DB instances and clusters that are created without encryption enabled.

By configuring automatic remediation, AWS Config can immediately invoke corrective actions without manual intervention. Integrating remediation with an Amazon SNS topic enables automated email notifications, while an AWS Lambda function can terminate the noncompliant resource. This creates a fully automated detect-alert-remediate workflow.

Option B requires manual remediation, which increases operational effort and delays enforcement. Options C and D rely on Amazon EventBridge, which evaluates events rather than configuration state and does not provide continuous compliance monitoring. AWS Config is explicitly designed for configuration compliance and governance use cases.

This solution aligns with AWS governance best practices by combining continuous monitoring, automated remediation, and centralized alerting with minimal operational overhead.

Referenced AWS Specialty Documents:

AWS Certified Security – Specialty Official Study Guide

AWS Config Managed Rules

AWS Config Automatic Remediation

Amazon S3 pre-signed URLs grant temporary access based on the permissions of the principal that generates them. AWS Certified Security – Specialty documentation explains that fine-grained authorization can be enforced by combining pre-signed URLs with IAM policy conditions.

By tagging each invoice object with a client identifier and adding a condition to the EC2 instance role policy using s3:ResourceTag/ClientId, the role can generate pre-signed URLs only for objects associated with a specific client. This ensures that each client can access only their own invoices, even though the URLs are temporary and unauthenticated.

Option A over-permissions clients. Option C is unnecessary because instance profiles already use temporary credentials. Option D violates AWS best practices by using long-term credentials.

AWS recommends resource tagging with IAM policy conditions for scalable, secure access control.

Referenced AWS Specialty Documents:

AWS Certified Security – Specialty Official Study Guide

Amazon S3 Pre-Signed URLs

IAM Policy Conditions and Resource Tags