X-Frame-Options
X-Frame-Options is an HTTP response header used to control whether a web page can be embedded within a frame, iframe, or object element on another site. It helps prevent clickjacking attacks by restricting how content is framed, enhancing security by mitigating risks like UI redressing. The header allows web developers to specify policies such as DENY, SAMEORIGIN, or ALLOW-FROM to control framing behavior.
Developers should use X-Frame-Options when building web applications to protect against clickjacking, where malicious sites trick users into interacting with hidden frames. It is essential for securing sensitive pages like login forms, payment gateways, or admin panels by preventing unauthorized embedding. Implementing this header is a best practice in web security to ensure user interactions are not hijacked by third-party sites.