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NEW QUESTION # 183
A security engineer is responding to an incident that is affecting an AWS account. The ID of the account is
123456789012. The attack created workloads that are distributed across multiple AWS Regions.
The security engineer contains the attack and removes all compute and storage resources from all affected Regions. However, the attacker also created an AWS KMS key. The key policy on the KMS key explicitly allows IAM principal kms:* permissions.
The key was scheduled to be deleted the previous day. However, the key is still enabled and usable. The key has an ARN of arn:aws:kms:us-east-2:123456789012:key/mrk-0bb0212cd9864fdea0dcamzo26efb5670.
The security engineer must delete the key as quickly as possible.
Which solution will meet this requirement?
Answer: C
Explanation:
AWS KMS enforces amandatory minimum waiting period of 7 daysbefore a customer managed key can be deleted. According to AWS Certified Security - Specialty incident response guidance,no method exists to immediately delete a KMS key. The fastest possible deletion is achieved by scheduling deletion with the minimum 7-day waiting period.
In this scenario, although deletion was previously scheduled, the key remains enabled and usable. The most authoritative and reliable method to regain control and reissue deletion immediately is touse the AWS account root user, which has implicit permissions to manage KMS keys regardless of compromised IAM principals.
Option B is incorrect because KMS keys are regional resources; multi-Region keys require coordinated deletion but do not shorten the waiting period. Option C is unnecessary because the key policy already allows kms:*. Option D increases the deletion waiting period to 30 days, which violates the requirement to delete the key as quickly as possible.
AWS documentation clearly states thatroot user access is the ultimate authority for KMS key management and that7 days is the minimum deletion window, making this the fastest valid option.
* AWS Certified Security - Specialty Official Study Guide
* AWS Key Management Service Developer Guide
* AWS Incident Response Best Practices
NEW QUESTION # 184
A company uses infrastructure as code (IaC) to create AWS infrastructure. The company writes the code as AWS CloudFormation templates to deploy the infrastructure. The company has an existing CI/CD pipeline that the company can use to deploy these templates.
After a recent security audit, the company decides to adopt a policy-as-code approach to improve the company's security posture on AWS. The company must prevent the deployment of any infrastructure that would violate a security policy, such as an unencrypted Amazon EBS volume.
Which solution will meet these requirements?
Answer: A
Explanation:
Comprehensive and Detailed 100to 150 words of Explanation From AWS Certified Security - Specialty topics:
AWS CloudFormation Guard is the correct policy-as-code control for validating CloudFormation templates before deployment. Guard lets security teams write rules that check JSON or YAML templates for policy requirements, such as requiring encrypted EBS volumes. AWS CloudFormation best practices specifically recommend integrating cfn-guard into CI/CD pipelines to validate templates before deployment and prevent noncompliant resources from reaching the environment. AWS Config is mainly detective or proactive compliance evaluation after or during resource provisioning, but the question asks to prevent deployment inside an IaC pipeline. Trusted Advisor does not validate templates. SCPs restrict account-level permissions but are not a CloudFormation template validation engine.
NEW QUESTION # 185
A security engineer for a company is investigating suspicious traffic on a web application in the AWS Cloud.
The web application is protected by an Application Load Balancer (ALB) behind an Amazon CloudFront distribution. There is an AWS WAF web ACL associated with the ALB. The company stores AWS WAF logs in an Amazon S3 bucket.
The engineer notices that all incoming requests in the AWS WAF logs originate from a small number of IP addresses that correspond to CloudFront edge locations. The security engineer must identify the source IP addresses of the clients that are initiating the suspicious requests.
Which solution will meet this requirement?
Answer: A
NEW QUESTION # 186
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?
Answer: B
Explanation:
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
NEW QUESTION # 187
A security engineer receives a notice about suspicious activity from a Linux-based Amazon EC2 instance that uses Amazon Elastic Block Store (Amazon EBS)-based storage. The instance is making connections to known malicious addresses.
The instance is in a development account within a VPC that is in the us-east-1 Region. The VPC contains an internet gateway and has a subnet in us-east-1a and us-east-1b. Each subnet is associated with a route table that uses the internet gateway as a default route. Each subnet also uses the default network ACL. The suspicious EC2 instance runs within the us-east-1b subnet. During an initial investigation, a security engineer discovers that the suspicious instance is the only instance that runs in the subnet.
Which response will immediately mitigate the attack and help investigate the root cause?
Answer: B
Explanation:
AWS incident response best practices emphasize immediate containment, preservation of evidence, and safe forensic investigation. According to the AWS Certified Security - Specialty Study Guide, when an EC2 instance is suspected of compromise, security teams should avoid logging in to the instance or installing additional tools, as these actions can alter evidence and increase risk.
Terminating the compromised instance after ensuring that its Amazon EBS volumes are preserved prevents further malicious activity immediately. By setting the EBS volumes to not delete on termination, all disk data is retained for forensic analysis. Launching a new, clean EC2 instance in a different subnet or Availability Zone with preinstalled diagnostic tools allows investigators to safely attach and analyze the compromised volumes without executing potentially malicious code.
Option A introduces significant risk by logging in to the compromised instance and modifying security controls during active compromise. Option B delays containment and allows continued outbound traffic during investigation steps. Option D is invalid because AWS WAF cannot be attached directly to Amazon EC2 instances and does not control outbound traffic.
AWS documentation strongly recommends isolating or terminating compromised resources and performing offline analysis using detached storage volumes. This approach ensures immediate mitigation, preserves forensic integrity, and aligns with AWS incident response frameworks.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
AWS Incident Response Best Practices
Amazon EC2 and EBS Forensics Guidance
AWS Well-Architected Framework - Security Pillar
NEW QUESTION # 188
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