Content Security Policy (CSP) is a security mechanism implemented in web browsers to prevent cross-site scripting (XSS) attacks and other types of injection attacks. CSP allows website operators to define a policy that determines which resources can be loaded from a website and from where they can be loaded.
The CSP policy can include various types of restrictions, including:
- Allowed sources for scripts, images, stylesheets, fonts, and other resources.
- Restrictions on the execution of inline scripts and inline styles.
- Setting security policies for specific types of resources, such as enabling HTTPS or using non-trusted HTTP sources.
- Reporting mechanisms to receive reports on violations of the CSP policy.
By using CSP, website operators can reduce the risk of XSS attacks by restricting the execution of unauthorized code. However, developers need to carefully ensure that the CSP policy is configured properly, as a too restrictive policy may potentially impact legitimate functions of the website.
