Secrets and .env: how to prevent leaking sensitive data

December 31, 2025•6 min read•URL: /en/blog/bezpieczenstwo-sekrety-env
Autor: 7kar7son7 • Developer

Common mistakes: public .env, logging secrets, no rotation, no middleware blocking.

securitynext.jsdevops

TL;DR

  • secure .env next.js
  • For apps with forms, payments and API keys.

Who this is for

  • For apps with forms, payments and API keys.

Keyword (SEO)

  • secure .env next.js

What not to do

  • Never expose /.env
  • Never log tokens
  • Never ship secrets to client

Best practices

  • Rotate keys
  • Separate dev/prod
  • Block sensitive paths

Quick checklist

  • Scan repo
  • Security headers
  • Rate limit endpoints

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About the author

Developer at DevStudio.it. Focused on performance, SEO and production-ready web apps.

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