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What does Content-Security-Policy prevent?
Content Security Policy (CSP) is a computer security standard introduced to prevent cross-site scripting (XSS), clickjacking and other code injection attacks resulting from execution of malicious content in the trusted web page context.
How does a content security policy work?
Enter Content Security Policy (CSP) – a standardized set of directives that tell the browser what content sources can be trusted and which should be blocked. Using carefully defined policies, you can restrict browser content to eliminate many common injection vectors and significantly reduce the risk of XSS attacks.
Should I use content security policy?
Why use the Content Security Policy? The primary benefit of CSP is preventing the exploitation of cross-site scripting vulnerabilities. When an application uses a strict policy, an attacker who finds an XSS bug will no longer be able to force the browser to execute malicious scripts on the page.
What does a Content Security Policy in http mean?
Content-Security-Policy The HTTP Content-Security-Policy response header allows web site administrators to control resources the user agent is allowed to load for a given page. With a few exceptions, policies mostly involve specifying server origins and script endpoints. This helps guard against cross-site scripting attacks (XSS).
Why is Content Security Policy ( CSP ) important?
With CSP, you can limit which data sources are allowed by a web application, by defining the appropriate CSP directive in the HTTP response header. Why is a Content Security Policy Important?
Can a worker be governed by a Content Security Policy?
Workers are in general not governed by the content security policy of the document (or parent worker) that created them. To specify a content security policy for the worker, set a Content-Security-Policy response header for the request which requested the worker script itself.
Why does Internet Explorer not support Content Security Policy?
CSP was first designed to reduce the attack surface of Cross Site Scripting (XSS) attacks, later versions of the spec also protect against other forms of attack such as Click Jacking. Content Security Policy is supported by all the major modern browsers, and has been for many years. It is not supported in Internet Explorer.