Which response header can a developer use to protect against Cross-Site Script (XSS) Inclusion attacks?

The correct response header to protect against Cross-Site Script (XSS) Inclusion attacks is the Cross-Origin Resource Policy (CORP). This header allows developers to control how their resources are shared and accessed across different origins. By implementing CORP, web developers can restrict the ability of malicious sites to embed sensitive resources, thus offering a layer of defense against XSS attacks. This helps mitigate risks by ensuring that only trusted origins can interact with the resources, reducing the likelihood of unauthorized script execution or data theft.

In addition to the CORP header, there are other headers that serve different purposes in enhancing security against various types of attacks, but they do not specifically address XSS Incluson attacks. For example, the Cross-Origin Opener Policy (COOP) is designed to prevent certain types of cross-origin data leaks but is more focused on controlling how documents interact within different browsing contexts rather than specifically protecting against script injection.

Similarly, the Cross-Origin Embedder Policy (COEP) is aimed at ensuring that a document can only load resources from origins that explicitly allow access, thus safeguarding the document's integrity. However, while these headers contribute to a more secure application environment, their direct role in mitigating XSS is not as pronounced as that of CORP.