Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) is a web security vulnerability that allows an attacker to induce users to perform actions that they do not intend to acquire—such as changing passwords or transferring funds—by leveraging the user’s active session.
In a CSRF attack, the attacker does not steal the user’s data directly. Instead, they trick the user’s browser into sending a forged HTTP request to a vulnerable application where the user is currently authenticated. Because the browser automatically includes session cookies, the server believes the request is legitimate. Professional prevention relies on Anti-CSRF Tokens (unique, unpredictable values for each session) and the use of the SameSite cookie attribute to restrict how cookies are sent with cross-site requests.
Frequently Asked Questions
SameSite attribute (with values Lax or Strict) instructs the browser whether to send cookies along with requests initiated by third-party websites. In 2026, setting SameSite=Lax is the industry standard for preventing the majority of CSRF attacks by default.Build a high-performance engine. From securing your site with HTTPS and SSL/TLS to building custom REST APIs, our Web Development team ensures your infrastructure is scalable, secure, and future-proof.