• Reporting Security Vulnerabilities
• Security Best Practices
• Supported Versions
• Security Architecture
• Compliance and Standards
• Security Testing
• Incident Response

We take the security of our GCP Terraform modules seriously. If you discover a security vulnerability, please report it responsibly.

DO NOT create a public GitHub issue for security vulnerabilities.

Instead, please:

1. Email: Send details to security@cloudon-one.com
2. Subject: Include "SECURITY VULNERABILITY - GCP Terraform Modules"
3. Include:
   • Description of the vulnerability
   • Steps to reproduce the issue
   • Potential impact assessment
   • Suggested remediation (if known)
   • Your contact information

Please provide as much information as possible:

- Module affected: [terraform-google-gke, terraform-google-cloudsql, etc.]
- Vulnerability type: [Authentication, Authorization, Data exposure, etc.]
- Affected versions: [1.0.0, 1.1.0, etc.]
- Attack vector: [Remote, Local, Physical]
- Impact level: [Critical, High, Medium, Low]
- Proof of concept: [Steps to reproduce]
- Proposed fix: [If available]

We commit to the following response times:

• Initial acknowledgment: Within 48 hours
• Initial assessment: Within 5 business days
• Status updates: Every 10 business days until resolved
• Resolution: Varies by complexity and severity

We appreciate responsible disclosure and will:

• Credit you in our security advisory (unless you prefer to remain anonymous)
• Keep you informed throughout the investigation process
• Provide updates on fix development and release timeline

When contributing to this project:

1. Never commit sensitive data:

   # Use .gitignore patterns
   *.tfvars
   *.tfstate
   *.tfstate.backup
   .terraform/
   secrets/

2. Use secure coding practices:

   • Follow principle of least privilege
   • Validate all inputs and outputs
   • Use secure defaults
   • Implement proper error handling

3. Security review checklist:

   • No hardcoded credentials or secrets
   • Proper IAM roles and permissions
   • Network security controls in place
   • Encryption at rest and in transit
   • Audit logging enabled
   • Resource deletion protection

When using these modules:

1. Secrets Management:

   # ❌ Don't do this
   variable "db_password" {
     default = "hardcoded-password"
   }
   
   # ✅ Do this instead
   variable "db_password" {
     description = "Database password - should be provided via environment variable"
     type        = string
     sensitive   = true
   }

2. Network Security:

   # Enable private clusters
   private_cluster_config {
     enable_private_nodes    = true
     enable_private_endpoint = true
   }
   
   # Restrict authorized networks
   master_authorized_networks_config {
     cidr_blocks {
       cidr_block   = "10.0.0.0/8"  # Corporate network only
       display_name = "corporate-network"
     }
   }

3. State File Security:

   # Use remote state with encryption
   terraform {
     backend "gcs" {
       bucket  = "terraform-state-bucket"
       prefix  = "terraform/state"
       encryption_key = "your-kms-key"
     }
   }

• Active support: Regular updates, bug fixes, and security patches
• Security fixes: Only critical security vulnerabilities
• Critical fixes: Only security issues with CVSS >= 8.0
• No support: No updates provided

Our modules implement multiple layers of security:

graph TB
    A[Internet] --> B[Cloud Armor WAF]
    B --> C[Load Balancer]
    C --> D[VPC Network]
    D --> E[Private GKE Cluster]
    D --> F[Private Cloud SQL]
    E --> G[Workload Identity]
    F --> H[Private IP Only]
    
    I[Bastion Host] --> D
    J[IAP Tunnel] --> I
    
    K[VPC Service Controls] --> D
    L[Binary Authorization] --> E
    M[Pod Security Standards] --> E

• ✅ Project isolation and separation
• ✅ Billing account association
• ✅ API enablement control
• ✅ Resource labeling for governance

• ✅ Private subnets with no external IPs
• ✅ Firewall rules with least privilege
• ✅ VPC Flow Logs for monitoring
• ✅ Private Google Access

• ✅ Private cluster with no public IPs
• ✅ Workload Identity for pod authentication
• ✅ Network policies for micro-segmentation
• ✅ Binary Authorization for container security
• ✅ Shielded GKE nodes with secure boot
• ✅ Node auto-repair and auto-upgrade
• ✅ Pod Security Standards enforcement

• ✅ SSH key-based authentication only
• ✅ IAP tunnel for secure access
• ✅ Fail2ban for brute force protection
• ✅ Audit logging of all sessions
• ✅ Network-based access controls

• ✅ Private IP configuration only
• ✅ SSL/TLS encryption in transit
• ✅ Encryption at rest
• ✅ Automated backups with retention
• ✅ Point-in-time recovery
• ✅ Authorized networks restriction

• ✅ Principle of least privilege
• ✅ Service account key rotation
• ✅ Conditional IAM policies
• ✅ IAM audit logging

• ✅ Data exfiltration protection
• ✅ API access restrictions
• ✅ Service perimeter enforcement
• ✅ Ingress/egress rules

Our modules help achieve compliance with:

• SOC 2 Type II
• ISO 27001
• PCI DSS (where applicable)
• GDPR (data protection by design)
• HIPAA (with additional configuration)

We follow these security standards:

• CIS Google Cloud Platform Foundation Benchmark
• NIST Cybersecurity Framework
• OWASP Cloud Security Top 10
• Google Cloud Security Best Practices

Before deploying to production:

• All default passwords changed
• Multi-factor authentication enabled
• Network segmentation implemented
• Encryption enabled for data at rest and in transit
• Monitoring and alerting configured
• Backup and disaster recovery tested
• Security logging enabled
• Vulnerability scanning configured
• Access controls reviewed and documented
• Incident response plan in place

We implement the following security tests:

1. Static Analysis:

   # Terraform security scanning
   tfsec .
   checkov -f main.tf
   terrascan scan -t terraform

2. Infrastructure Testing:

   # Test security controls
   terratest test/security_test.go
   inspec exec security-baseline

3. Compliance Validation:

   # CIS benchmark validation
   gcloud compute instances list --format="table(name,status,zone,machineType)"

name: Security Scan
on: [push, pull_request]

jobs:
  security:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      
      - name: Run tfsec
        uses: aquasecurity/tfsec-sarif-action@v0.1.0
        with:
          sarif_file: tfsec.sarif
          
      - name: Run Checkov
        uses: bridgecrewio/checkov-action@master
        with:
          directory: .
          framework: terraform
          
      - name: Run Terrascan
        uses: accurics/terrascan-action@main
        with:
          iac_type: terraform

1. Detection and Analysis (0-4 hours):

   • Identify and validate the security incident
   • Determine scope and impact
   • Assemble incident response team
   • Begin forensic preservation

2. Containment and Eradication (4-24 hours):

   • Implement immediate containment measures
   • Remove threat from environment
   • Apply temporary fixes
   • Document all actions taken

3. Recovery (24-72 hours):

   • Restore normal operations
   • Monitor for signs of compromise
   • Implement permanent fixes
   • Update security controls

4. Post-Incident Activities (72+ hours):

   • Conduct lessons learned session
   • Update incident response procedures
   • Share findings with stakeholders
   • Implement preventive measures

Security Team: security@yourcompany.com
On-Call Engineering: oncall@yourcompany.com
Management Escalation: security-escalation@yourcompany.com

# Immediate containment commands
gcloud compute instances stop INSTANCE_NAME --zone=ZONE
gcloud container clusters update CLUSTER_NAME --enable-network-policy
gcloud sql instances patch INSTANCE_NAME --no-backup

# Forensic data collection
gcloud logging read 'timestamp>="2024-01-01T00:00:00Z"'
gcloud compute instances get-serial-port-output INSTANCE_NAME

Security advisories will be published:

• GitHub Security Advisories: For version-specific vulnerabilities
• Release Notes: For security-related updates
• Mailing List: security-updates@yourcompany.com (subscribe for notifications)

• Code Review: Every pull request
• Security Audit: Quarterly
• Penetration Testing: Annually
• Vulnerability Assessment: Monthly
• Compliance Review: Bi-annually

For security-related questions:

• General Security: security@cloudon-one.com
• Vulnerability Reports: security@cloudon-one.com (PGP key available)
• Security Questions: GitHub Discussions with "security" tag

Last Updated: September 2025
Next Review: December 2025
Version: 1.0