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| Certification Vendor: | Amazon Web Services (AWS) |
|---|---|
| Exam Name: | AWS Certified Security - Specialty (SCS-C03) |
| Exam Number: | SCS-C03 |
| Exam Price: | $300 USD |
| Passing Score: | 750 (scaled score out of 1000) |
| Certificate Validity Period: | 3 years |
| Exam Format: | Multiple choice, Multiple response |
| Exam Duration: | 170 minutes |
| Related Certifications: | AWS Certified SysOps Administrator - Associate AWS Certified Solutions Architect - Professional AWS Certified Advanced Networking - Specialty AWS Certified Solutions Architect - Associate AWS Certified DevOps Engineer - Professional |
| Available Languages: | English, Korean, Simplified Chinese, Japanese |
| Real Exam Qty: | 65 (multiple choice and multiple response) |
| Recommended Training: | AWS Skill Builder - Security Learning Path AWS Certified Security - Specialty Exam Prep |
| 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 # 47
A security engineer needs to implement a logging solution that captures detailed information about objects in an Amazon S3 bucket. The solution must include details such as the IAM identity that makes the request and the time the object was accessed. The data must be structured and available in near real time.
Which solution meets these requirements?
Answer: B
Explanation:
AWS CloudTrail data event logging is the correct solution because it is specifically designed to capture detailed, structured, and near-real-time API activity for Amazon S3 object-level operations. When S3 data events are enabled, CloudTrail records actions such as GetObject, PutObject, and DeleteObject, along with critical context including the IAM principal, source IP address, event time, request parameters, and response elements. These logs are delivered in JSON format, making them highly structured and suitable for security analysis, SIEM integration, and automated detection workflows.
NEW QUESTION # 48
A company's developers are using AWS Lambda function URLs to invoke functions directly. The company must ensure that developers cannot configure or deploy unauthenticated functions inproduction accounts. The company wants to meet this requirement by using AWS Organizations. The solution must not require additional work for the developers.
Which solution will meet these requirements?
Answer: C
Explanation:
AWS Organizations service control policies (SCPs) are designed to enforce preventive guardrails across accounts without requiring application-level changes. According to the AWS Certified Security - Specialty documentation, SCPs can restrict specific API actions or require certain condition keys to enforce security standards centrally. AWS Lambda function URLs support two authentication modes: AWS_IAM and NONE.
When the authentication type is set to NONE, the function URL becomes publicly accessible, which introduces a significant security risk in production environments.
By using an SCP that explicitly denies the lambda:CreateFunctionUrlConfig and lambda:
UpdateFunctionUrlConfig actions when the lambda:FunctionUrlAuthType condition key equals NONE, the organization ensures that unauthenticated function URLs cannot be created or modified in production accounts. This enforcement occurs at the AWS Organizations level and applies automatically to all accounts within the specified organizational units (OUs). Developers are not required to change their workflows or add additional controls, satisfying the requirement of no additional developer effort.
Option A relates to browser-based access controls and does not provide authentication or authorization enforcement. Option B is not valid because AWS WAF cannot be attached directly to AWS Lambda function URLs. Option C is incorrect because SCPs do not grant permissions; they only limit permissions. AWS documentation clearly states that SCPs define maximum available permissions and are evaluated before IAM policies.
This approach aligns with AWS best practices for centralized governance, least privilege, and preventive security controls.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
AWS Organizations Service Control Policies Documentation
AWS Lambda Security and Function URL Authentication Overview
NEW QUESTION # 49
A company with 50 AWS accounts managed through AWS Organizations needs to set up a centralized threat detection solution. The solution must identify suspicious and potentially malicious activity across all accounts in the organization.
The company uses AWS Control Tower and wants to centralize security findings into an audit account. A security team must receive email alerts within 5 minutes of any new security findings.
Which solution will meet these requirements?
Answer: B
Explanation:
Amazon GuardDuty is the AWS threat detection service designed to identify suspicious and potentially malicious activity across AWS accounts. In an AWS Organizations environment, the audit account can be configured as the delegated administrator so GuardDuty can be centrally managed across all member accounts. GuardDuty findings are also published to Amazon EventBridge in near real time, and EventBridge can route those findings to an Amazon SNS topic for email alerts, which satisfies the requirement for centralized detection and notifications within minutes.
NEW QUESTION # 50
A company runs an application on an Amazon EC2 instance. The application generates invoices and stores them in an Amazon S3 bucket. The instance profile that is attached to the instance has appropriate access to the S3 bucket. The company needs to share each invoice with multiple clients that do not have AWS credentials. Each client must be able to download only the client's own invoices. Clients must download their invoices within 1 hour of invoice creation. Clients must use only temporary credentials to access the company's AWS resources. Which additional step will meet these requirements?
Answer: D
Explanation:
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.
NEW QUESTION # 51
A company allows users to download its mobile app onto their phones. The app is MQTT based and connects to AWS IoT Core to subscribe to specific client-related topics. Recently, the company discovered that some malicious attackers have been trying to get a Trojan horse onto legitimate mobile phones. The Trojan horse poses as the authentic application and uses a client ID with injected special characters to gain access to topics outside the client ' s privilege scope.
Which combination of actions should the company take to prevent this threat? (Select TWO.)
Answer: A,D
Explanation:
The threat is client ID manipulation to break authorization boundaries. The strongest control is tobind the MQTT client identity to the authenticated device identity(the Thing) rather than trusting arbitrary client IDs provided by the client. Using theThing name as the client ID(Option A) removes ambiguity and makes the identifier predictable and tied to a registered identity.
On the authorization side, AWS IoT Core policies can use policy variables. Allowing iot:Connect only when the resource matches client/${iot:Connection.Thing.ThingName} (Option E) ensures the connection is permittedonlyif the client ID exactly equals the authenticated Thing name from the TLS certificate/Thing principal context. This prevents attackers from injecting special characters or choosing a different client ID to escalate access, because the policy evaluation ties the allowed client resource to the Thing identity, not the attacker-controlled string.
Option D is weaker because it effectively allows whatever client ID is presented (it matches the same value the client supplies), so it does not prevent crafted client IDs from being used. Option C is unrelated to the described MQTT connect authorization (and references an action not aligned with the scenario). Option B is an application-side check and can be bypassed by a malicious client; enforcement must be at AWS IoT Core policy level.
NEW QUESTION # 52
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