Web Security Guide | OWASP, Authentication & Security Best Practices

Content Security Policy (CSP) is a security standard that helps prevent Cross-Site Scripting (XSS) attacks by specifying which sources of content are allowed to be loaded and executed on a web page.

CSP is primarily used to mitigate the risk of XSS vulnerabilities, but it can also be employed to restrict resource loading from untrusted domains, enhancing overall security posture.

CSP works by defining a policy that is enforced through HTTP headers. These headers instruct the browser to only execute scripts and load resources from approved sources, effectively blocking malicious code injection attempts.

Yes, CSP can be configured to completely block inline JavaScript execution, a common technique used by attackers to inject malicious code into web pages. This significantly reduces the attack surface.