How To Fix a Missing Content-Security-Policy on a Website
Summary
This article explains Content Security Policy (CSP), a security header that websites should implement. CSP helps mitigate cross-site scripting (XSS) and data injection attacks by controlling which resources (scripts, styles, etc.) a browser is allowed to load for a given page.
IFF Assessment
FRIEND
Implementing Content Security Policy is a defensive measure that helps protect websites from common attacks like XSS, making it beneficial for defenders.
Defender Context
Web application defenders should understand and advocate for the implementation of Content Security Policy. Properly configured CSP can significantly reduce the attack surface for XSS and related injection vulnerabilities, which are prevalent and can lead to severe compromises.