AWS Security Governance at Scale: Which AWS Service Provides Continuous Threat Detection for Your Account?

How Does Amazon GuardDuty Protect AWS Accounts from Malicious Activity?

Learn about Amazon GuardDuty, the intelligent threat detection service that continuously monitors for malicious activity and unauthorized behavior to protect your AWS accounts, workloads, and data. Understand how it differs from other AWS security services.

Question

What AWS service continuously monitors for malicious activity and unauthorized behavior to protect an organizations’ AWS accounts, workloads, and data?

A. AWS Config
B. AWS GuardDuty
C. AWS Shield
D. AWS Inspector

Answer

B. AWS GuardDuty

Explanation

Amazon GuardDuty is an intelligent threat detection service that is purpose-built to continuously monitor your AWS accounts and workloads for malicious activity and unauthorized behavior. It uses machine learning, anomaly detection, and integrated threat intelligence feeds to identify and prioritize potential threats. GuardDuty analyzes events from multiple AWS data sources, such as AWS CloudTrail event logs, Amazon VPC Flow Logs, and DNS logs, to provide a comprehensive view of activity. It is designed to detect threats like reconnaissance by attackers, compromised instances or accounts, and data exfiltration without requiring you to deploy or manage any security software or infrastructure.

Incorrect Options

A. AWS Config: This service is used for assessing, auditing, and evaluating the configurations of your AWS resources. It focuses on configuration compliance (e.g., “Is this S3 bucket encrypted?”) rather than detecting active malicious behavior.

C. AWS Shield: This is a managed Distributed Denial of Service (DDoS) protection service. It specifically safeguards applications running on AWS from DDoS attacks, but it does not monitor for the broad range of threats that GuardDuty covers.

D. AWS Inspector: This is a vulnerability management service that scans your AWS workloads (like EC2 instances and container images) for software vulnerabilities and unintended network exposure. It identifies potential weaknesses before they are exploited, whereas GuardDuty detects active threats and compromises.

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