What does the Ex-Frame-Options Header help to prevent?

The Ex-Frame-Options header is a security feature used in web development to prevent clickjacking attacks. Clickjacking occurs when a malicious website tricks a user into clicking on something different from what the user perceives, potentially leading to unintended actions like changing settings, submitting forms, or even making unauthorized transactions.

By using the Ex-Frame-Options header, a web application can instruct the browser not to allow the page to be displayed within a frame or iframe on another site. This is crucial for protecting sensitive actions and ensuring that users are aware of their context when interacting with web pages. There are generally three directives for this header: 'DENY', 'SAMEORIGIN', and 'ALLOW-FROM' which control how and where the page can be embedded.

In contrast, while SQL Injection attacks, Cross-Site Scripting (XSS), and credential theft are significant security threats, they are mitigated by other security controls rather than through the use of the Ex-Frame-Options header. SQL Injection is addressed through input validation and parameterized queries; XSS prevention typically involves sanitizing input and output; and credential theft often requires the implementation of strong authentication mechanisms and encryption. Thus, the specific purpose of the Ex-Frame-