First Move (11~18) - Code, Learn, Build
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First Move (11~18) - Code, Learn, Build

Structured, level-based technology learning paths from foundational exploration to industry mastery.

Learning Domains

  • Python Programming (Active)
  • Computer Science Core
  • Web Development
  • AI & Machine Learning

Platform Architecture

  • Level-Based Progression
  • Decoupled Content Schema
  • Modular Code Execution Engine
  • Curated Official Resources

© 2026 First Move (11~18) • CODE • LEARN • BUILD. Built with Next.js App Router.

Readability & Accessibility First

← Web Security & OWASP Defense|Level 2: OWASP Top 10 Vulnerabilities & Code Defenses

4. CSRF Defense & Broken Access Control Remediation

Lesson 4 of 6
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CSRF Defense & Broken Access Control Remediation

Mitigate CSRF attacks with SameSite cookies & Anti-CSRF Tokens, and enforce strict server-side authorization checks (BOLA/IDOR).

Broken Access Control & CSRF

### Broken Access Control (OWASP #1) Broken Access Control occurs when endpoints fail to check whether the authenticated user (`req.user.id`) actually owns the requested resource (`/api/orders/:orderId`). Fix by enforcing ownership checks in middleware.
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