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How do you protect against CSRF attacks in APIs?

Junior ASP.NET Web API
Quick Answer CSRF attacks trick authenticated users into making unwanted requests. For stateless JWT APIs (Authorization header): CSRF is not a concern (browsers don't auto-send custom headers). For cookie-based auth: use antiforgery tokens (ValidateAntiforgeryToken), SameSite=Strict/Lax cookie attribute, or custom request header validation. Most REST APIs using Bearer tokens don't need CSRF protection.

Answer

API best practices:

  • Use JWT instead of cookies
  • Enable strict CORS policies
  • Use anti-forgery tokens if cookies are used
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SugharaIQ Editorial Team Verified Answer

This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.

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