Definition:Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) tricks an authenticated user's browser into submitting unauthorized requests to a web application.
Detailed Technical Explanation
Business Perspective
Protecting against CSRF prevents unauthorized transactions or account setting changes triggered by malicious external sites.
Technical Perspective
Mitigated by setting `SameSite=Strict` or `SameSite=Lax` on cookies and requiring anti-CSRF request headers.
Real-World Example
A malicious site submitting a hidden form to `bank.com/transfer` while the user is logged into their bank account.
Common Architectural Mistakes
- ✗Using `SameSite=None` Without CSRF Tokens: Disabling cross-site cookie restrictions without validating anti-CSRF request headers.
Ecosystem Integration
Engineering Services & Solutions
Frequently Asked Questions
How does SameSite cookie flag prevent CSRF?
It instructs browsers not to send cookies along with cross-site requests originating from external domains.
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