CSRF Protection: How Cross-Site Request Forgery Works

CSRF attacks explained: how they work, CSRF tokens, SameSite cookies, double-submit pattern, and framework protection.

How CSRF Works

An attacker tricks a logged-in user into making a request to your site. The browser automatically includes cookies, so the server thinks it is a legitimate request.

Prevention Methods

• CSRF tokens: Unique token per session, verified on every state-changing request
• SameSite cookies: SameSite=Strict or SameSite=Lax prevents cross-origin cookie sending
• Check Origin/Referer headers

Related Tools & Articles

• JSON Formatter
• Base64 Encoder
• Password Generator
• Regex Tester
• Hash Generator
• All 50+ Free Tools