Content Security Policy

Lesson in the Backend Developer Roadmap · Stage 11: Applications

Last updated 14 September 2026

What is Content Security Policy?

CSP (Content Security Policy) prevents XSS and code injection attacks by specifying trusted content sources. Implemented via HTTP headers or meta tags, defining rules for scripts, stylesheets, images, and fonts. Reduces malicious code execution risk but requires careful configuration.

Study this in the interactive course See the whole Backend roadmap

Free resources to learn Content Security Policy

ArticleMDN — Content Security Policy (CSP)
ArticleGoogle Devs — Content Security Policy (CSP)
VideoContent Security Policy Explained

Content Security Policy: common questions

Can I learn Content Security Policy in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Content Security Policy in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Content Security Policy tutorial for beginners?

It is lesson 75 of 155 in the free Backend roadmap, in stage 11, Applications. If you are new to Backend, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.