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Automating Security Remediation With CloudTrail and Lambda
In this hands-on lab, you'll build an automated security remediation workflow using AWS CloudTrail, Amazon EventBridge, and AWS Lambda. You'll create a target IAM role that the automation protects from unauthorized inline policy attachments, and configure a CloudTrail trail to capture IAM management events. You'll then deploy a Lambda function that removes any unauthorized policies added to the role, and wire it to an EventBridge rule that triggers whenever CloudTrail detects an inline policy modification.
Lab Info
Table of Contents
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Challenge
Configure CloudTrail to Capture IAM Management Events Relevant to Security Monitoring
- Create the target IAM role.
- Create a CloudTrail trail.
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Challenge
Deploy a Lambda Function that Performs Automated Remediation when a Triggering Event Occurs
- Create the function execution role in IAM with least-privilege permissions.
- Deploy the Lambda function.
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Challenge
Create an EventBridge Rule that Filters CloudTrail Events Associated with IAM Policy or Role Modifications
- Add the IAM event pattern filter to the rule.
- Add the remediation Lambda function as a target.
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Challenge
Validate the Automated Remediation Workflow by Generating a Test IAM Event and Confirming the Lambda Response
- Add an inline policy to the target role.
- Verify that the remediation Lambda function has been invoked.
- Verify that the inline policy has been removed from the target role.
- Verify in CloudTrail that both the policy addition and the Lambda-initiated policy removal were successful.
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