Best Practices Guide

AI Code Security Best Practices

A comprehensive guide to developing securely with AI coding assistants. Learn how to leverage AI productivity while maintaining security standards.

Quick Wins

Enable command approval in your AI IDE
Review code before accepting suggestions
Never commit AI code without human review
Scan for vulnerabilities before deployment
Keep AI tools updated for security patches
Use isolated environments for AI tools

Security Best Practices

#1Review Every Line of AI-Generated Code

CRITICAL

AI models can generate code with security vulnerabilities including XSS, SQL injection, hardcoded secrets, and insecure configurations. Never accept code without reviewing it.

Don't do this

Accept all suggestions without reading them. Trust that AI knows best.

Do this instead

Review each suggestion for vulnerabilities, validate inputs, check for hardcoded secrets.

#2Enable Command Approval for AI Tools

CRITICAL

AI coding tools with terminal access (Cursor, Windsurf, Claude Code) can execute system commands. Require explicit approval for every command to prevent prompt injection attacks.

How to Configure

  • Cursor: Disable "Yolo mode" in settings
  • Claude Code: Enable permission prompts (default)
  • Windsurf: Review Cascade agent actions

#3Use Security Scanning on AI Code

HIGH

Automated security scanners can catch vulnerabilities that humans miss. Run scans on every PR that contains AI-generated code.

Recommended Scanning Strategy

  • • SAST tools (Semgrep, CodeQL) for static analysis
  • • Secret scanning (GitGuardian, TruffleHog)
  • • Dependency scanning (Snyk, Dependabot)
  • • DAST for deployed applications

#4Be Cautious with External Content

HIGH

Indirect prompt injection attacks hide malicious instructions in websites, repositories, and documents. Be careful what you ask AI to analyze.

High Risk
  • • Unknown GitHub repositories
  • • Random websites
  • • npm packages from unknown authors
Lower Risk
  • • Official documentation sites
  • • Well-known, maintained repos
  • • Your own codebase

#5Use Isolated Development Environments

MEDIUM

Run AI coding tools in containers or VMs without access to production credentials, SSH keys, or sensitive files.

Environment Isolation Options

  • • Docker Dev Containers in VS Code
  • • GitHub Codespaces
  • • Dedicated development VMs
  • • Separate user accounts for AI development

#6Validate Authentication & Authorization Code

MEDIUM

AI frequently generates incomplete or insecure authentication logic. Always manually verify auth code.

Common AI Auth Mistakes

  • • Missing authorization checks on API routes
  • • Client-side only validation
  • • JWT without proper verification
  • • Insecure session management
  • • Missing CSRF protection

AI Code Review Checklist

Input Validation

User input sanitized?
SQL queries parameterized?
HTML properly escaped?

Authentication

Auth checks on all routes?
Tokens validated server-side?
Session management secure?

Secrets

No hardcoded credentials?
Environment variables used?
Secrets not logged?

Dependencies

Packages from trusted sources?
Versions not vulnerable?
Minimal permissions requested?

Error Handling

Errors don't leak info?
Stack traces hidden in prod?
Fail securely?

Frequently Asked Questions

Is AI-generated code less secure than human-written code?

Studies show AI-generated code has similar vulnerability rates to human code, but AI may produce vulnerabilities at scale faster. The key difference is human developers can reason about security implications while AI cannot.

Should I stop using AI coding tools?

No. AI tools significantly boost productivity. The key is using them responsibly: review code, enable command approval, use security scanning, and understand the risks.

How do I secure my team's AI coding practices?

Create policies for: mandatory code review of AI suggestions, required security scanning in CI/CD, approved AI tools list, and training on prompt injection risks.

What's the most common vulnerability in AI-generated code?

Input validation issues (XSS, SQL injection) and missing authorization checks are the most common. AI often generates 'happy path' code without defensive programming.

Scan Your AI-Generated Code

Find vulnerabilities in your codebase before they reach production. Works with code from any AI tool.

Scan Your App Free

Last updated: January 2025