Summary
Content Security Policy (CSP) is an added layer of security that helps to detect and mitigate certain types of attacks, including Cross-Site Scripting (XSS) and data injection attacks.
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These attacks can be used for data theft, site defacement, and malware distribution.
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CSP can help protect websites from malicious attacks by providing a set of rules that the browser must follow when loading resources.
CSP can also be used to restrict the types of content that can be loaded on a website.
According to
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Summaries from the best pages on the web
Content Security Policy 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.[1] It is a Candidate Recommendation of the W3C working group on Web Application Security,[2] widely supported by modern web browsers.[3] CSP provides a standard method for website owners to declare approved origins of content that browsers should be allowed to load on that website—covered types are JavaScript, CSS, HTML frames, web workers, fonts, images, embeddable objects such as Java applets, ActiveX, audio and video files, and other HTML5 features.
Content Security Policy - Wikipedia
wikipedia.org
Content Security Policy can significantly reduce the risk and impact of cross-site scripting attacks in modern browsers.
Content security policy
web.dev
2.2.3. Parse response ’s Content Security Policies To parse a response’s Content Security Policies given a response ( response ):
Content Security Policy Level 3
w3.org
