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| Certification Vendor: | Amazon Web Services (AWS) |
|---|---|
| Exam Name: | AWS Certified Security - Specialty (SCS-C03) |
| Exam Number: | SCS-C03 |
| Exam Format: | Multiple response, Multiple choice |
| Real Exam Qty: | 65 (multiple choice and multiple response) |
| Certificate Validity Period: | 3 years |
| Exam Price: | $300 USD |
| Exam Duration: | 170 minutes |
| Available Languages: | Simplified Chinese, Japanese, English, Korean |
| Related Certifications: | AWS Certified Advanced Networking - Specialty AWS Certified DevOps Engineer - Professional AWS Certified Solutions Architect - Associate AWS Certified Solutions Architect - Professional AWS Certified SysOps Administrator - Associate |
| Passing Score: | 750 (scaled score out of 1000) |
| Recommended Training: | AWS Certified Security - Specialty Exam Prep AWS Skill Builder - Security Learning Path |
| Exam Registration: | AWS Certification Portal AWS Certification Official Registration |
| Sample Questions: | Amazon SCS-C03 Sample Questions |
| Exam Way: | Online proctored or testing center (onsite) |
| Pre Condition: | No mandatory prerequisite, but recommended experience: 5+ years in IT security and 2+ years securing AWS workloads |
| Official Syllabus URL: | https://aws.amazon.com/certification/certified-security-specialty/ |
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NEW QUESTION # 224
A security engineer must investigate an Amazon GuardDuty finding. The finding indicates potential cryptocurrency mining activity on an Amazon EC2 instance. The security engineer must validate the finding and assess the impact.
Which data sources should the security engineer analyze to meet these requirements?
Answer: D
Explanation:
Cryptocurrency mining validation requires evidence of actual mining behavior, not only metadata about the finding. Process details show whether mining binaries or suspicious processes are running on the instance. DNS analysis can reveal lookups to known mining pools or suspicious domains. VPC Flow Logs help confirm outbound connections, destinations, ports, and traffic volume from the instance. GuardDuty uses foundational data sources such as DNS logs, VPC Flow Logs, and CloudTrail events to detect suspicious activity, so those same sources are appropriate for validating and scoping the finding. CPU metrics alone are useful context but not enough. Counting findings or checking severity does not prove impact. Session history and Route
53 records do not directly validate mining behavior.
NEW QUESTION # 225
A company has AWS accounts in an organization in AWS Organizations. An Amazon S3 bucket in one account is publicly accessible. A security engineer must remove public access and ensure the bucket cannot be made public again.
Which solution will meet these requirements?
Answer: D
Explanation:
Amazon S3 Block Public Access provides centralized controls to prevent public access through bucket policies and ACLs. AWS Certified Security - Specialty guidance recommends enabling Block Public Access to reduce accidental exposure and to enforce guardrails that override public grants. Enabling Block Public Access on the bucket removes current public exposure when combined with correcting policies/ACLs and prevents future misconfiguration. To ensure the bucket cannot be made public again, the security engineer must prevent principals from disabling Block Public Access. An SCP that denies s3:PutPublicAccessBlock prevents changes that would remove or weaken the PublicAccessBlock configuration, enforcing the guardrail across the OU or account. Options A and D do not directly address public exposure control. Option B denies object reads but does not ensure public access cannot be re-enabled; it also does not address the root misconfiguration pathways and could disrupt legitimate access patterns. Option C specifically combines the correct preventive control (PublicAccessBlock) with organizational enforcement to stop future reversal.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
Amazon S3 Block Public Access
AWS Organizations SCP Guardrails for S3 Controls
NEW QUESTION # 226
A company's public website consists of an Application Load Balancer (ALB), a set of Amazon EC2 instances that run a stateless application behind the ALB, and an Amazon DynamoDB table from which the application reads data. The company is concerned about malicious scanning and DDoS attacks. The company wants to impose a restriction in which each client IP address can read the data only3 times in any 5-minute period.
Which solution will meet this requirement with the LEAST effort?
Answer: B
Explanation:
This is a classic Layer 7 rate-limiting requirement tied toclient IPand atime window, and AWS WAF provides this natively withrate-based rules. Placing AWS WAF in front of the ALB allows the company to count requests per source IP over a rolling window and take action (block, CAPTCHA/challenge, or count depending on configuration) once the threshold is exceeded. This approach mitigates scanning and application-layer request floods early, before requests consume EC2 or DynamoDB capacity, and it requires minimal custom code or operational work.
NEW QUESTION # 227
A company finds that one of its Amazon EC2 instances suddenly has a high CPU usage. The company does not know whether the EC2 instance is compromised or whether the operating system is performing background cleanup.
Which combination of steps should a security engineer take before investigating the issue?
(Choose three.)
Answer: C,D,E
Explanation:
Before beginning an investigation, incident response best practice is topreserve evidence,prevent accidental loss of the asset, andclearly mark and control the potentially affected resource.
Enablingtermination protection(Option B) helps ensure the instance is not accidentally terminated during triage, which would destroy volatile evidence and complicate forensics and recovery.
TakingEBS snapshotsof all attached data volumes (Option C) preserves a point-in-time copy of disk evidence for later forensic analysis, malware scanning, or offline investigation. Snapshots allow responders to create forensic volumes or AMIs in an isolated environment without repeatedly touching the potentially compromised instance.
Capturinginstance metadataand tagging the instance asunder quarantine(Option E) supports both investigation and operational control. Metadata capture (instance ID, IAM role, network interfaces, security groups, user-data, tags, recent changes) provides context for responders. Quarantine tagging enables automated workflows (for example, incident runbooks that isolate the instance, restrict IAM, or move it to a quarantine security group) and signals to other teams/tools that the instance is under investigation.
NEW QUESTION # 228
A company stores sensitive data in AWS Secrets Manager. A security engineer needs to design a solution to generate a notification email when anomalous GetSecretValue API calls occur. The security engineer has configured an Amazon EventBridge rule for all Secrets Manager events that AWS CloudTrail delivers. Which solution will meet these requirements?
Answer: D
Explanation:
To monitor for anomalous GetSecretValue API calls and trigger notifications, the solution needs to capture the relevant events, filter them for anomalies, and send alerts. By using Amazon CloudWatch Logs as the target for the EventBridge rule, the security engineer can create a CloudWatch Logs metric filter on relevant API call data (such as IncomingBytes), enabling anomaly detection to spot unusual activity.
Then, an Amazon SNS topic can be configured to distribute alerts when a CloudWatch alarm (based on the metric filter) is triggered. This setup is efficient for detecting anomalous patterns in API calls and notifying the team via email.
NEW QUESTION # 229
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