Get All AWS Certified Security - Specialty Exam Questions with Validated Answers
| Vendor: | Amazon |
|---|---|
| Exam Code: | SCS-C03 |
| Exam Name: | AWS Certified Security - Specialty |
| Exam Questions: | 231 |
| Last Updated: | August 23, 2026 |
| Related Certifications: | Amazon Specialty |
| Exam Tags: |
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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?
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
A healthcare company stores more than 1 million patient records in an Amazon S3 bucket. The patient records include personally identifiable information (PII). The S3 bucket contains hundreds of terabytes of data.
A security engineer receives an alert that was triggered by an Amazon GuardDuty Exfiltration:S3/AnomalousBehavior finding. The security engineer confirms that an attacker is using temporary credentials that were obtained from a compromised Amazon EC2 instance that has s3:GetObject permissions for the S3 bucket. The attacker has begun downloading the contents of the bucket. The security engineer contacts a development team. The development team will require 4 hours to implement and deploy a fix.
The security engineer must take immediate action to prevent the attacker from downloading more data from the S3 bucket.
Which solution will meet this requirement?
Amazon GuardDuty Exfiltration:S3/AnomalousBehavior findings indicate that S3 data access patterns are consistent with data exfiltration. In this scenario, the attacker is usingtemporary credentials obtained from an EC2 instance profile, which are issued by AWS Security Token Service (STS).
According to AWS Certified Security -- Specialty documentation, thefastest and most targeted remediationis to revoke the temporary session credentials associated with the compromised instance profile. This can be accomplished by removing or modifying the IAM role permissions, detaching the instance profile, or stopping the instance, which immediately invalidates the temporary credentials and prevents further S3 access.
Option B may limit outbound traffic but does not invalidate already issued credentials. Option C is a detection and classification service and does not prevent active exfiltration. Option D would block all access to the bucket, including legitimate access, and is considered overly disruptive for incident containment.
AWS incident response best practices emphasizecredential revocation as the first containment stepwhen compromise of temporary credentials is confirmed.
AWS Certified Security -- Specialty Official Study Guide
Amazon GuardDuty User Guide -- S3 Protection
AWS STS and IAM Role Security Documentation
AWS Incident Response Best Practices
A company experienced a security incident caused by a vulnerable container image that was pushed from an external CI/CD pipeline into Amazon ECR.
Which solution will prevent vulnerable images from being pushed?
Amazon Inspector provides native CI/CD integration capabilities that allow security checks to occur before container images are pushed to Amazon ECR. According to AWS Certified Security -- Specialty documentation, Inspector does not block image pushes automatically. Instead, prevention must occur inside the CI/CD pipeline itself.
By generating a Software Bill of Materials (SBOM) using the Amazon Inspector SBOM generator and submitting it to Inspector for scanning, the pipeline can detect critical vulnerabilities before the image is uploaded. If vulnerabilities exceed policy thresholds, the pipeline fails, preventing deployment.
Post-push scanning solutions only detect vulnerabilities after exposure. Event-driven blocking does not prevent the initial risk.
AWS best practices require ''shift-left'' security controls to prevent vulnerable artifacts from entering production.
Referenced AWS Specialty Documents:
AWS Certified Security -- Specialty Official Study Guide
Amazon Inspector CI/CD Integration
A company creates AWS Lambda functions from container images that are stored in Amazon Elastic Container Registry (Amazon ECR). The company needs to identify any software vulnerabilities in the container images and any code vulnerabilities in the Lambda functions.
Which solution will meet these requirements?
Amazon Inspector is the AWS service designed specifically for vulnerability management across compute workloads, including Amazon ECR container images and AWS Lambda functions. According to the AWS Certified Security -- Specialty documentation, Amazon Inspector provides automated vulnerability assessments for container images stored in ECR by performing enhanced image scanning that identifies common vulnerabilities and exposures (CVEs) in operating systems and application dependencies.
Inspector also supports Lambda code scanning to analyze function packages and container-based Lambda images for known software vulnerabilities. Findings include severity ratings and remediation guidance, allowing security teams to identify and prioritize risks efficiently.
Amazon GuardDuty focuses on threat detection using behavioral analysis and does not perform static vulnerability scanning of container images or Lambda code. AWS Security Hub aggregates findings from other services but does not perform scanning itself.
AWS best practices recommend Amazon Inspector for vulnerability detection in container images and serverless workloads.
Referenced AWS Specialty Documents:
AWS Certified Security -- Specialty Official Study Guide
Amazon Inspector for ECR and Lambda
AWS Vulnerability Management Best Practices
A company recently experienced a malicious attack on its cloud-based environment. The company successfully contained and eradicated the attack. A security engineer is performing incident response work. The security engineer needs to recover an Amazon RDS database cluster to the last known good version. The database cluster is configured to generate automated backups with a retention period of 14 days. The initial attack occurred 5 days ago at exactly 3:15 PM.
Which solution will meet this requirement?
Amazon RDS supports point-in-time recovery (PITR) using automated backups within the configured retention window. According to the AWS Certified Security -- Specialty Study Guide, PITR allows recovery to any second within the retention period, making it the most precise recovery method following a security incident.
By restoring the database cluster to a point just before the attack occurred, such as 3:14 PM, the security engineer ensures that the restored database reflects the last known good state without including malicious changes. This method is more accurate than restoring from snapshots, which are created at fixed intervals and may not align with the exact recovery time.
Options B and C rely on snapshot timing and may reintroduce compromised data. Option D restores to an arbitrary time and does not meet the requirement to recover to the last known good version.
AWS documentation explicitly recommends point-in-time recovery for incident response scenarios that require precise restoration.
Referenced AWS Specialty Documents:
AWS Certified Security -- Specialty Official Study Guide
Amazon RDS Automated Backups and PITR
AWS Incident Response and Recovery Guidance
Security & Privacy
Satisfied Customers
Committed Service
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