Scanners like these are crucial to understand the way they work and to effectively block any type of CSF attack. Using the extension, you can safely and quickly test a given site’s Content Security Policy (CSP) and verify if it is actually protecting the site against XSS, Clickjacking, Formjacking, and other malicious attacks.

A CSP is the most critical control that all websites must follow. It is a security protocol that allows websites to distinguish between different requests that should be treated as safe and others that should be seen as a potential security threat.

However, with so many different CSPs to process, it can be a difficult task to verify if a website’s implementation is strong enough.

This is where CSP Scanner can help. It allows developers and security experts to easily inspect a site’s Content Security Policy (CSP) and understand if it serves as a strong mitigation against client-side attacks like XSS, Clickjacking, Formjacking, Data Exfiltration and more.