About Hardenly
Security scanning built for Vercel
Generic security tools don't understand Next.js and Vercel. We built Hardenly to find the vulnerabilities they miss—exposed secrets, Server Action gaps, middleware bypasses, and more.
The Problem
Vercel has a unique security model
Next.js blurs the line between server and client. Code that looks safe can leak secrets to the browser. Middleware that seems protective can be bypassed. Server Actions that appear locked down can be called without authentication.
Traditional scanners check for SQL injection and XSS. They don't understand the Vercel deployment model, the App Router architecture, or the subtleties of React Server Components.
What generic scanners miss
- Environment variables without
NEXT_PUBLIC_prefix leaked to client bundles - Server Actions callable without session validation
- Middleware patterns that can be bypassed with path manipulation
- ISR/SSG cache poisoning vulnerabilities
- Route handlers with missing authentication checks
Our Approach
Deep analysis, not surface scanning
We analyze your deployment the way an attacker would—examining client bundles, probing endpoints, and testing edge cases specific to the Vercel platform.
Bundle Analysis
We decompile your client JavaScript to find secrets, API keys, and server code that shouldn't be exposed.
Endpoint Probing
We test your API routes and Server Actions for authentication gaps, authorization flaws, and input validation issues.
Header Verification
We check your security headers against best practices and identify misconfigurations that leave you vulnerable.
Fast Results
Get actionable findings in under 60 seconds. Each issue includes exact locations and step-by-step remediation.
Why Trust Us
Built by engineers who ship on Vercel
We've deployed hundreds of Next.js applications. We've seen the security gaps firsthand—the subtle ways secrets leak, the edge cases that bypass middleware, the Server Actions that expose sensitive operations.
Hardenly exists because we needed it ourselves. Now we're making it available to every team shipping on Vercel.
Our commitment
100% money-back guarantee
If we don't find actionable issues, you get a full refund.
Verification re-scans included
Confirm your fixes work before shipping to production.
Confidential findings
Your security report stays private. We never share or publish vulnerability data.
See what we find in your app
Free security scan in 60 seconds. No signup required. Find the vulnerabilities that generic scanners miss.