gcp-security-scanner

DevOps & Security

GCP security configuration scanning and hardening using Security Command Center, Forseti, and ScoutSuite

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How to use this skill

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I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/a5c-ai/babysitter/blob/HEAD/library/specializations/security-compliance/skills/gcp-security-scanner/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/gcp-security-scanner/. Do not write files or run scripts until I approve.

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Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

GCP Security Scanner Skill

Purpose

Automated Google Cloud Platform security configuration scanning and hardening to identify misconfigurations, compliance violations, and security risks across GCP projects and organizations.

Capabilities

Security Command Center Integration

Leverage GCP Security Command Center findings
Review vulnerability and threat findings
Check Security Health Analytics results
Monitor Event Threat Detection alerts
Track Container Threat Detection findings
Generate compliance reports

IAM Security Analysis

Analyze IAM policies for over-permissive access
Check service account key usage and rotation
Identify excessive permissions
Review organization policy constraints
Detect cross-project access
Audit IAM recommender suggestions

VPC Firewall Analysis

Review firewall rules for overly permissive access
Check for open management ports
Validate VPC Service Controls
Review Shared VPC configurations
Check Private Google Access settings
Analyze VPC flow logs configuration

Cloud Storage Security

Identify publicly accessible buckets
Check bucket IAM policies
Validate uniform bucket-level access
Review bucket encryption settings
Check access logging configuration
Verify retention policies

Cloud KMS Configuration

Review key ring and key configurations
Check key rotation policies
Validate IAM policies on keys
Review HSM key protection levels
Check external key manager usage
Audit key access patterns

Audit Logging Verification

Validate Cloud Audit Logs configuration
Check data access logging
Review admin activity logging
Verify log export configuration
Check Cloud Logging retention
Validate alert policies

Organization Policy Assessment

Review organization policy constraints
Check service restriction policies
Validate resource location constraints
Review VM external IP restrictions
Check service account creation policies

GCP Services Covered

Category	Services
Identity	IAM, Cloud Identity, Workforce Identity
Compute	Compute Engine, GKE, Cloud Run, Functions
Storage	Cloud Storage, Persistent Disks
Database	Cloud SQL, Spanner, BigQuery, Firestore
Network	VPC, Firewall, Cloud Armor, Cloud CDN
Security	Security Command Center, Cloud KMS, BeyondCorp
Monitoring	Cloud Logging, Cloud Monitoring, Cloud Audit Logs

Integrations

Security Command Center: GCP native CSPM
Forseti Security: Open-source GCP security toolkit
ScoutSuite: Multi-cloud security auditing
Cloud Asset Inventory: Resource visibility
IAM Recommender: Permission optimization

Target Processes

Cloud Security Architecture Review
Compliance Monitoring
GCP Project Hardening
Security Posture Assessment

Input Schema

{
  "type": "object",
  "properties": {
    "scanType": {
      "type": "string",
      "enum": ["full", "cis", "pci", "hipaa", "iso27001", "custom"],
      "description": "Type of security scan"
    },
    "projects": {
      "type": "array",
      "items": { "type": "string" },
      "description": "GCP project IDs to scan"
    },
    "organization": {
      "type": "string",
      "description": "GCP organization ID for org-wide scanning"
    },
    "services": {
      "type": "array",
      "items": { "type": "string" },
      "description": "Specific services to scan"
    },
    "severityThreshold": {
      "type": "string",
      "enum": ["critical", "high", "medium", "low"]
    },
    "complianceFrameworks": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": ["CIS", "PCI-DSS", "HIPAA", "ISO27001", "SOC2", "NIST"]
      }
    },
    "includeSCC": {
      "type": "boolean",
      "description": "Include Security Command Center findings"
    }
  },
  "required": ["scanType"]
}

Output Schema

{
  "type": "object",
  "properties": {
    "scanId": {
      "type": "string"
    },
    "scanTimestamp": {
      "type": "string",
      "format": "date-time"
    },
    "projectsScanned": {
      "type": "array"
    },
    "organizationId": {
      "type": "string"
    },
    "summary": {
      "type": "object",
      "properties": {
        "totalChecks": { "type": "integer" },
        "passed": { "type": "integer" },
        "failed": { "type": "integer" },
        "warnings": { "type": "integer" }
      }
    },
    "findingsBySeverity": {
      "type": "object",
      "properties": {
        "critical": { "type": "integer" },
        "high": { "type": "integer" },
        "medium": { "type": "integer" },
        "low": { "type": "integer" }
      }
    },
    "findings": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "checkId": { "type": "string" },
          "severity": { "type": "string" },
          "service": { "type": "string" },
          "project": { "type": "string" },
          "resourceName": { "type": "string" },
          "description": { "type": "string" },
          "remediation": { "type": "string" },
          "complianceMapping": { "type": "array" }
        }
      }
    },
    "sccFindings": {
      "type": "array"
    },
    "organizationPolicyStatus": {
      "type": "object"
    },
    "recommendations": {
      "type": "array",
      "items": { "type": "string" }
    }
  }
}

Usage Example

skill: {
  name: 'gcp-security-scanner',
  context: {
    scanType: 'cis',
    projects: ['my-project-id'],
    complianceFrameworks: ['CIS', 'SOC2'],
    includeSCC: true,
    severityThreshold: 'medium'
  }
}