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| Section | Weight | Objectives |
|---|---|---|
| Data Protection | 18% | - Data security services
|
| Logging and Monitoring | 18% | - Monitoring and alerting
|
| Management, Governance and Compliance | 14% | - Compliance and auditing
|
| Identity and Access Management | 16% | - Federation and access control
|
| Infrastructure Security | 20% | - Compute security
|
| Threat Detection and Incident Response | 14% | - Detection mechanisms
|
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NEW QUESTION # 120
A company's platform has grown rapidly over the past 6 months. The company's platform architecture evolved quickly to accommodate the growth. The company's development team has been deploying features quickly by using different AWS services. The development team has not performed formal architecture reviews.
The company needs to evaluate its security posture against AWS security best practices.
Which solution will meet these requirements?
Answer: C
Explanation:
The AWS Well-Architected Tool is designed to evaluate workloads against AWS best practices, including the Security Pillar. Creating a workload and answering the security questions based on the current architecture gives the company a structured review of identity, detection, infrastructure protection, data protection, and incident response practices. Milestones record the state of the workload at a point in time and help track improvement as high-risk issues are remediated. Cost Explorer is for cost analysis, not security posture review. Security Hub CSPM provides control findings but does not replace a full Well- Architected workload review. Amazon Detective supports investigation of security findings, not architecture best-practice assessment.
NEW QUESTION # 121
A company has configured an organization in AWS Organizations for its AWS accounts. AWS CloudTrail is enabled in all AWS Regions.
A security engineer must implement a solution toprevent CloudTrail from being disabled.
Which solution will meet this requirement?
Answer: B
Explanation:
AWS CloudTrail is a foundational security service that records API activity and account events. According to the AWS Certified Security - Specialty Official Study Guide,the only way to centrally and reliably prevent CloudTrail from being disabled across multiple AWS accounts is by using AWS Organizations service control policies (SCPs).
SCPs define themaximum available permissionsfor all accounts in an organization or organizational unit. By creating an SCP with an explicitDenyfor the cloudtrail:StopLogging and cloudtrail:DeleteTrail actions and attaching it to theroot OU, the security engineer ensures thatno principal in any member account-including administrators-can stop or delete CloudTrail trails. Explicit denies in SCPs cannot be overridden by IAM permissions.
Option A is incorrect because log file integrity validation only detects tampering after logs are delivered and does not prevent CloudTrail from being disabled. Option B protects log data at rest but does not prevent trail deletion or logging suspension. Option D removes read-only permissions and does not affect the ability to stop or delete CloudTrail.
AWS documentation explicitly states thatSCPs are the recommended mechanism to enforce mandatory security controls such as CloudTrail logging across an organization, making this the correct and most secure solution.
* AWS Certified Security - Specialty Official Study Guide
* AWS Organizations SCP Documentation
* AWS CloudTrail Security Best Practices
NEW QUESTION # 122
A security engineer received an Amazon GuardDuty alert indicating a finding involving the Amazon EC2 instance that hosts the company ' s primary website. The GuardDuty finding received read:
UnauthorizedAccess:IAMUser/InstanceCredentialExfiltration. The security engineer confirmed that a malicious actor used API access keys intended for the EC2 instance from a country where the company does not operate. The security engineer needs to deny access to the malicious actor.
What is the first step the security engineer should take?
Answer: B
Explanation:
The findingInstanceCredentialExfiltrationindicates that credentials available to the EC2 instance (from the instance profile / IMDS) were likely stolen and then used from an unusual location. The fastest way todeny the malicious actor immediatelyis to invalidate the stolen, currently usable credentials. Because these aretemporary credentialsissued to the instance profile role, the correct first containment action is torevoke active sessionsfor that role so the stolen session credentials stop working. This directly blocks continued API use while you continue investigation and remediation.
Changing security groups (Option A) affects inbound network access to the website but does not stop an attacker from using stolen API credentials against AWS APIs. Installing agents and running assessments (Options B and C) are investigative steps that take time and do not immediately cut off the attacker's current access. After revoking sessions, best practice incident response typically continues with additional containment and eradication steps such as rotating credentials, reviewing CloudTrail for actions taken, checking for persistence (new IAM users/keys, modified policies), patching the instance, and restricting IMDS (for example, enforcing IMDSv2) to reduce risk of further credential theft.
NEW QUESTION # 123
A company's security team wants to receive near-real-time email notifications about AWS abuse reports related to DoS attacks. An Amazon SNS topic already exists and is subscribed to by the security team.
What should the security engineer do next?
Answer: C
Explanation:
AWS abuse notifications are delivered as AWS Health events. According to the AWS Certified Security - Specialty Study Guide, Amazon EventBridge integrates natively with AWS Health and can be used to detect specific event types such as AWS_ABUSE_DOS_REPORT in near real time.
By creating an EventBridge rule that filters for the abuse report event type and publishes directly to Amazon SNS, the solution remains fully managed, low latency, and cost effective.
Polling APIs introduces delay and complexity. CloudTrail does not log abuse notifications. EventBridge with AWS Health is the recommended mechanism for reacting to AWS service events.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
AWS Health and EventBridge Integration
AWS Abuse Notification Handling
NEW QUESTION # 124
A security engineer needs to protect a public web application that runs in a VPC. The VPC hosts the origin for an Amazon CloudFront distribution. The application has experienced multiple layer 7 DDoS attacks. An AWS WAF web ACL is associated with the CloudFront distribution. The web ACL contains one AWS managed rule to protect against known IP addresses that have bad reputations.
The security engineer must configure an automated solution that detects and mitigates layer 7 DDoS attacks in real time with no manual effort.
Which solution will meet these requirements?
Answer: B
Explanation:
Option D is the correct solution because it provides fully automated, real-time detection and mitigation of application-layer (Layer 7) DDoS attacks with no manual intervention. AWS Shield Advanced includes automatic application layer DDoS mitigation when it is enabled for supported resources such as Amazon CloudFront distributions. This feature continuously monitors traffic patterns and, when an attack is detected, automatically deploys AWS WAF rules to mitigate malicious requests.
Adding a rate-based rule to the AWS WAF web ACL further strengthens protection by automatically blocking IP addresses that exceed a defined request threshold, which is a common characteristic of Layer 7 DDoS attacks. This combination aligns directly with AWS best practices for protecting web applications against volumetric and application-layer threats.
Option A only provides alerting and visibility but does not ensure automated mitigation. Option B includes proactive engagement with the AWS DDoS Response Team, which is valuable for complex or large-scale attacks but still involves human interaction and therefore does not meet the "no manual effort" requirement.
Option C introduces unnecessary complexity and is not recommended for protecting CloudFront-based applications against Layer 7 DDoS attacks.
AWS Security Specialty documentation explicitly recommends AWS Shield Advanced with automatic application layer DDoS mitigation and AWS WAF rate-based rules for fully automated, real-time protection of public web applications.
NEW QUESTION # 125
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