Amazon SCS-C03 Exam Dumps

The immediate containment step for exposed access keys is todisable (deactivate) the compromised IAM access key(Option B). This prevents any further use of the leaked credentials, which is essential once secrets are publicly exposed. Creating a new key (Option D) may be part of recovery later, but it does not stop abuse of the already exposed key unless the exposed key is first deactivated.

To determine whether the credentials were used, you need evidence of access activity. Among the provided options, the best fit is generating and reviewing theIAM credential report(Option E). The report includes metadata such as access key status and ''last used'' style details that help triage whether the user's credentials have been exercised recently. While deeper investigation would typically rely on CloudTrail ''AccessKeyId'' searches, the credential report is a quick AWS-native step aligned to the answer choices.

Option A is not correct: IAM Access Analyzer helps identify external access paths to resources and validate policies; it does not provide a definitive history of what a specific access key did. Option C is not a GuardDuty capability---GuardDuty generates findings; it does not ''block'' a specific access key. Therefore, deactivating the key and using credential reporting to assess recent usage best matches the requirements.

For the earliest detection of abnormal spend, the most direct and purpose-built capability isAWS Cost Anomaly Detection. It continuously evaluates spend patterns and uses machine learning to identify unexpected cost increases soon after they begin, then sends alerts based on the configured thresholds. By creating acost monitor(for example, for linked accounts, services, or cost categories) and configuring an alert to publish toSNS, the security team can receive near-real-time notifications when costs deviate beyond an expected baseline. This is well suited for detecting compromise-driven spend (such as abused EC2 instances serving phishing pages, crypto-mining, or data exfiltration patterns that raise transfer costs).

Option A introduces significant operational overhead and delays because billing/usage exports are not guaranteed to be updated on an hourly cadence in a way that consistently outperforms the native anomaly detector, and the company would be maintaining custom analytics logic. Option C is explicitly slower (daily manual review). Option D may detect suspicious traffic but is indirect for ''earliest cost increase'' detection and depends on building/operating a separate analytics pipeline; also, not all cost anomalies are visible from flow logs. Therefore, Cost Anomaly Detection provides the fastest and lowest-overhead alerting for unexpected spend.

Comprehensive and Detailed 100to 150 words of Explanation From AWS Certified Security -- Specialty topics: IAM Access Analyzer is the correct service for least-privilege review because it can analyze unused access and last accessed information for IAM identities. AWS documentation states that unused access analyzers can generate findings for access that has not been used within a configured period, with a selectable range up to 365 days. This directly matches the annual audit requirement. CloudTrail logs contain raw activity data, but manually reviewing 365 days of events for each identity is high effort and error-prone. AWS Config tracks configuration changes, not effective permission usage. Trusted Advisor can identify some security risks, but it does not provide the role-level and user-level last accessed analysis needed to remove unused permissions systematically.

================

Comprehensive and Detailed 100to 150 words of Explanation From AWS Certified Security -- Specialty topics: GuardDuty publishes findings to EventBridge, which can trigger automated incident workflows. Systems Manager OpsCenter centralizes operational items and integrates with EventBridge, allowing GuardDuty findings to be transformed into OpsItems and linked with Systems Manager Automation runbooks for remediation. Since the company already has Systems Manager managed instances and an Automation document that changes security groups, routing GuardDuty command-and-control findings through EventBridge to OpsCenter is the cleanest automated remediation path. Amazon Detective supports investigation, not remediation execution. AWS Config evaluates configuration compliance, not live network behavior to known C2 destinations. Security Hub CSPM aggregates and normalizes security findings, but NIST control scans do not directly detect GuardDuty C2 traffic or automatically run the prepared isolation document.

================

To restrict activity to a single Region in an OU using an SCP, the standard pattern is an explicitDenyfor requests madeoutsidethe allowed Region, while carving out exceptions forglobal servicesthat do not use aws:RequestedRegion in the same way (or that must remain usable regardless of Region). This is done withEffect: Deny, aConditionusing StringNotEquals on aws:RequestedRegion for the allowed Region (here, eu-west-1), andNotActionlisting the global services that should remain available.

This works because SCPs act asguardrails: an explicit Deny in an SCP overrides IAM Allow in member accounts, ensuring the restriction applies consistently to all existing and future accounts placed in the OU. The StringNotEquals condition ensures the deny triggers for any Region other than eu-west-1. The NotAction exception list ensures that the specified global services are not blocked by this deny statement.

Option A is wrong because StringEquals would deny actionsineu-west-1 rather than outside it. Options B and D useAllowstatements, which do not enforce ''only this Region'' safely in SCPs unless combined with a comprehensive deny strategy; they would not reliably restrict all other services/regions. Therefore, option C is the correct SCP structure.