AWS Security Hub Remediation Program
Centralized cloud security remediation and compliance automation for enterprise-scale AWS environments.
A structured remediation program for AWS Security Hub findings across accounts, teams, and operational ownership boundaries.
Case Study Snapshot
- Project Type
- Cloud Security Automation Project
- Customer
- Confidential Enterprise Customer
- Industry
- Global Hosting Provider
- Duration
- Jan 2023 - Jun 2023
- Team Size
- Security, infrastructure, platform, and application operations teams
- Environment
- Production AWS Enterprise Environment
- Scale
- Multi-account AWS Organization
- Primary Outcome
- 65% reduction in critical findings
Role
Senior Cloud Infrastructure Engineer / Site Reliability Engineer / Cloud Security Engineer
Metrics Dashboard
Measurable improvements in security operations.
The program was evaluated through operational outcomes: critical risk reduction, triage speed, account coverage, and compliance visibility.
65%
Reduction in critical findings
Critical risks closed through prioritized remediation and ownership routing.
40%
Faster incident triage
Reusable evidence packs and severity rules reduced manual review time.
100%
Target account coverage
Security Hub coverage standardized across the target AWS account scope.
90%+
Compliance visibility
FSBP-aligned controls made leadership risk tracking easier to sustain.
Executive Summary
Security Hub became the operating layer for cloud remediation.
Implemented a centralized cloud security remediation framework using AWS Security Hub as the security control plane for production AWS environments.
Integrated Security Hub with GuardDuty, Inspector, AWS Config, EventBridge, Lambda, CloudWatch, and SNS to enable continuous compliance monitoring, automated alerting, and faster remediation.
Environment & Scale
Production AWS enterprise scope.
- Multi-account AWS environment managed under AWS Organizations.
- Production workloads supporting business-critical applications.
- Security findings across multiple AWS services and accounts.
- Remediation ownership across infrastructure, platform, and application teams.
- Compliance monitoring aligned with AWS Foundational Security Best Practices.
Business Problem
Findings existed, but remediation accountability was fragmented.
Critical risks remained open longer than expected because triage, evidence collection, ownership, and repeatable runbooks were split across environments and teams.
Solution Architecture
AWS-native security services routed into a remediation workflow.
Security Hub centralized findings from detection and compliance services. EventBridge, Lambda, CloudWatch, and SNS created the operational loop for triage, alerting, evidence collection, and closure.
Finding Sources
GuardDuty
Threat detection
Inspector
Vulnerability findings
AWS Config
Compliance checks
IAM Access Analyzer
Access risk detection
CloudTrail
Audit visibility
Remediation Flow
AWS Security Hub
Central finding aggregation
EventBridge
Severity and compliance routing
Lambda
Alerting and remediation logic
CloudWatch
Logs and monitoring
SNS
Email notifications
Evidence Store
Audit-ready records
Security Dashboard
Risk and progress visibility
Remediation Review
Validate and close findings
Mermaid source
flowchart LR
GD[Amazon GuardDuty] --> SH[AWS Security Hub]
INS[Amazon Inspector] --> SH
CFG[AWS Config] --> SH
IAM[IAM Access Analyzer] --> SH
CT[CloudTrail] --> SH
SH --> EB[Amazon EventBridge]
EB --> L[AWS Lambda]
L --> CW[CloudWatch Logs]
L --> SNS[SNS Email Alerts]
L --> EV[Evidence Store]
EV --> DB[Security Dashboard]
DB --> RM[Remediation Review]Case Study Snapshot
Signals for senior engineering review.
- Industry
- Global Hosting Provider
- Environment
- Production AWS Enterprise Environment
- Scale
- Multi-account AWS Organization
- Team Size
- Security, infrastructure, platform, and application operations teams
- Role
- Senior Cloud Infrastructure Engineer / SRE
- Primary Outcome
- 65% reduction in critical findings
- Focus Areas
- Cloud Security, Automation, Compliance, Operational Excellence
Technologies Used
AWS-native security, compliance, and automation stack.
Event-driven
Serverless-first
Least privilege access
Automated remediation where safe
Centralized visibility
Auditability and traceability
Reusable remediation workflows
My Responsibilities
Hands-on cloud security ownership.
- Implemented AWS Security Hub across production AWS environments.
- Enabled AWS Foundational Security Best Practices controls.
- Integrated Security Hub with GuardDuty, Inspector, AWS Config, CloudTrail, EventBridge, Lambda, CloudWatch, and SNS.
- Designed remediation workflow for critical and high-severity findings.
- Implemented IAM least-privilege improvements and MFA controls.
- Reviewed IAM policies, roles, access keys, and privileged access.
- Configured monitoring, logging, and email alerting.
- Conducted security assessments and remediation activities.
- Partnered with security and operations teams.
Security Controls Implemented
Controls translated into actionable remediation.
Automated Remediation Workflow
A repeatable path from finding to validated closure.
The program separated high-signal routing from remediation execution so teams could act faster without losing traceability.
Finding generated by AWS security service.
Finding normalized in AWS Security Hub.
EventBridge routes critical, high severity, and compliance events.
Lambda runs alerting, evidence collection, and safe remediation logic.
SNS notifies the accountable team.
CloudWatch captures automation logs.
Evidence is attached to the review process.
Finding is validated and closed.
Engineering Outcomes
Operational behavior changed.
- Reduced MTTR for critical findings.
- Standardized remediation workflows.
- Reduced manual operational effort.
- Improved compliance visibility.
- Increased repeatability of remediation processes.
Business Impact
Risk became easier to manage.
- Improved cloud security posture.
- Reduced manual triage effort.
- Improved visibility into high-risk findings.
- Strengthened IAM governance.
- Improved audit readiness.
- Created operational accountability.
- Enabled leadership risk tracking.
Lessons Learned
Security automation needs operating context.
- Security automation requires ownership metadata.
- Event-driven workflows improve response time.
- Small reusable runbooks are more effective.
- Accountability improves remediation effectiveness.
- Continuous compliance monitoring is essential.
Why This Project Matters
A practical bridge between cloud security, SRE, and governance.
This project demonstrates production experience with cloud security engineering, AWS security operations, event-driven architecture, automation engineering, compliance governance, and cross-team operational leadership.
Key Discussion Topics
Interview-ready technical depth.
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Customer names, account identifiers, ARNs, internal screenshots, IP addresses, domains, and internal tooling details are intentionally excluded. Customer is represented as Confidential Enterprise Customer in the Global Hosting Provider industry.