Automated Threat Remediation

Futuralis Develops Automated Threat Remediation with AWS

A digital-first enterprise hosting business-critical applications on AWS sought to reduce manual effort in threat detection and response. With increasing GuardDuty alerts and Security Hub findings, their small security team was overwhelmed by triaging and remediation tasks.

The Challenge

The client faced growing security complexity and operational risk due to:

Manual remediation of GuardDuty & Security Hub findings.
Inconsistent enforcement of remediation actions across environments.
Lack of real-time alerting for critical security events.
Need for scalable, auditable, and automated threat response.

Our Solution

The AWS-centered solution to meet PCI compliance included:

Futuralis designed and deployed an event-driven, serverless security automation framework that integrates AWS native services to detect, alert, and remediate security findings in real-time.

🔍 Detection Layer

Amazon GuardDuty detects anomalous behaviors, including key exfiltration and unauthorized EC2 activity.
AWS Security Hub aggregates findings from GuardDuty and other integrated AWS security tools.

⚡ Event-Driven Workflow

Amazon EventBridge is configured with rules to match key threat patterns from:
- aws.guardduty
- aws.securityhub
These rules forward matched events to:
- Notification Lambda – sends alerts.
- Auto-Remediation Lambda – executes containment actions.

📣 Notification Lambda

Parses incoming findings.
Sends formatted alerts to a centralized SNS topic.
Delivers instant email notifications to the security team with region, resource, account ID, and finding type.

🔒 Auto-Remediation Lambda

Automatically:
- Stops EC2 instances suspected of compromise.
- Revokes IAM instance profiles to cut off unauthorized access.
- Reconfigures Security Groups to block inbound traffic.

📈 Monitoring & Audit

CloudWatch Logs capture every triggered event and action.
CloudWatch Alarms monitor failure patterns or response delays.

Results & Benefits

MTTR (Mean Time to Respond)

< 2 minutes

Alert Visibility

Real-time email alerts

Remediation Consistency

Standardized via Lambda workflows

Operational Overhead

Fully automated remediation

Compliance Readiness

Full visibility via CloudWatch

By partnering with Futuralis, the customer successfully shifted from reactive to proactive security operations. This serverless solution using AWS Lambda, SNS, EventBridge, GuardDuty, and Security Hub now enables real-time threat detection, notification, and automated remediation—without human intervention.

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