devsecops-free-security

name	devsecops-free-security
description	Find free security tools: vulnerability scanners, SAST/DAST, secrets management, and PKI

Skill: DevSecOps Free Security

Goal

Identify free security tools for DevSecOps: vulnerability scanning, SAST/DAST, secrets management, and PKI/certificates.

Use This Skill When

• Building security into CI/CD pipelines at zero cost
• Setting up secrets management without enterprise tools
• Needing free SSL/TLS certificates

Do Not Use This Skill When

• Enterprise compliance requirements (SOC2, PCI-DSS)
• Production secrets management at scale

Inputs

• Security tool category (SAST, DAST, secrets, PKI)
• Language/technology stack
• Integration points (CI/CD, runtime)

Steps

1. Inventory SAST Tools (Static Analysis)

   • GitHub CodeQL

     • Free for public repos
     • Supports many languages
     • Integrated with GitHub Actions

   • SonarCloud

     • Free for public repos
     • 15 languages supported
     • CI/CD integration

   • Semgrep

     • Free for small teams
     • Customizable rules
     • GitHub/GitLab integration

   • ESLint (JS/TS)

     • Open source, free
     • Extensive plugin ecosystem
     • Security plugins available

   • Bandit (Python)

     • Free, open source
     • Common security issues detection

   • Safety (Python)

     • Dependency vulnerability scanning
     • Free database access

2. Inventory DAST Tools (Dynamic Analysis)

   • OWASP ZAP

     • Free, open source
     • Automated scanning
     • CI/CD integration

   • Nuclei

     • Free, open source
     • Template-based scanning
     • Fast and extensible

   • SSL Labs

     • Free SSL/TLS assessment
     • Online tool + API

3. Inventory Secrets Management

   • HashiCorp Vault

     • Open source, self-hosted free
     • Cloud HSM integration

   • Infisical

     • Free for small teams
     • Open source
     • GitHub/GitLab integration

   • Doppler

     • Free for small teams (3 seats)
     • Secrets management platform

   • 1Password (Secrets Automation)

     • Free for developers
     • GitHub Actions integration

   • AWS Secrets Manager

     • 30 secrets free for 1 year
     • Persecret/month after trial

   • GitLab CI Variables

     • Free with GitLab
     • Masked and protected variables

4. Inventory PKI and Certificates

   • Let's Encrypt

     • Free SSL/TLS certificates
     • Auto-renewal via certbot
     • Rate limits: 50 certificates/week per domain

   • ZeroSSL

     • Free 90-day certificates
     • 3 certificates per domain

   • Cloudflare SSL

     • Free Universal SSL
     • Works with Cloudflare proxy

   • SSL For Free

     • Free certificates via ACME
     • Multiple CA options

   • Buypass

     • Free SSL certificates
     • Norwegian CA

   • DigiCert (Free Trial)

     • Limited free trial

5. Inventory Container Security

   • Trivy

     • Free, open source
     • Container image scanning
     • CI/CD integration

   • Clair

     • Free, open source
     • Container vulnerability scanner

   • Grype

     • Free, open source
     • Syft-based SBOM scanning

   • Docker Scout (via Docker Hub)

     • Free vulnerability scanning
     • Integrated with Docker Hub

6. Inventory Dependency Scanners

   • Dependabot

     • Free on GitHub
     • Automated updates
     • Security alerts

   • Snyk

     • Free for small projects
     • Open source security
     • Container scanning

   • WhiteSource Renovate

     • Free for open source
     • Automated dependency updates

   • OWASP Dependency-Check

     • Free, open source
     • CVE database scanning

Output

• Security tool comparison by category
• Integration recommendations for CI/CD
• Self-hosted vs SaaS trade-offs
• Certificate authority options

Key Considerations

• Let's Encrypt is the gold standard for free SSL
• Self-hosted tools require infrastructure
• Free tiers often have usage limits
• Public repos get best free tool support