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Vercel Security Guide
Q&AVercel

What are the security best practices for Vercel?

Configure comprehensive security headers including CSP, Permissions-Policy, X-Frame-Options, and Referrer-Policy through middleware or next.config.js. Enable Deployment Protection on all preview deployments and restrict access to team members only. Keep all secrets in server-side environment variables without the NEXT_PUBLIC_ prefix and access them only through API routes. Implement rate limiting and input validation on all serverless functions, and use Vercel Firewall rules to block malicious traffic patterns. UNPWNED monitors your Vercel deployment continuously and alerts you when security configurations drift from best practices.

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Last reviewed: 2026-04-07. Based on publicly available security research and UNPWNED scan telemetry.

Related Questions

How do I secure my Vercel deployment?How do I add a Content Security Policy on Vercel?

More Vercel Security Questions

Is Vercel secure by default?Does Vercel add security headers automatically?How do I add a Content Security Policy on Vercel?Are Vercel preview deployments secure?Are NEXT_PUBLIC_ environment variables a security risk?How secure are Vercel Serverless Functions?