HTTP Content Security Policy Detector Firefox addon for detecting X-Content-Security-Policy
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HTTP Content Security Policy Detector Description

HTTP Content Security Policy Detector is a Firefox extension designed to scrutinize the HTTP Response Headers and detect X-Content-Security-Policy. 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. These attacks are used for everything from data theft to site defacement or distribution of malware. CSP is designed to be fully backward compatible; browsers that don't support it still work with servers that implement it, and vice-versa. Browsers that don't support CSP simply ignore it, functioning as usual, defaulting to the standard same-origin policy for web content.

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