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uBlock, I exfiltrate: exploiting ad blockers with CSS
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<blockquote data-quote="ForgottenSeer 92963" data-source="post: 967640"><p>[USER=80838]@Jan Willy[/USER]</p><p></p><p>Do you mean with " Is it wise to whitelist all CSS" removing all CSP modifiers set in filterlists?</p><p></p><p>The $CSP modifier is a static filter (which AdGuard says only to be used by specialists, which hackers/malware writers usually are), so besides selectively enabling cosmetic filtering, removing CSP changes set by any filter is recommended (this means the content security policies set by a website self are applicable): @@||*$csp</p><p>[SPOILER="uBlock wiki documentation CSP modifier"]</p><p>[ATTACH=full]262706[/ATTACH]</p><p>[/SPOILER]</p><p></p><p>Browsers do not perform a CSP check on extensions: <a href="https://sidanmor.com/how-browser-extensions-routinely-bypass-a-csp-content-security-policy-2d482767a672" target="_blank">How Browser Extensions Routinely Bypass a CSP (Content Security Policy)</a></p></blockquote><p></p>
[QUOTE="ForgottenSeer 92963, post: 967640"] [USER=80838]@Jan Willy[/USER] Do you mean with " Is it wise to whitelist all CSS" removing all CSP modifiers set in filterlists? The $CSP modifier is a static filter (which AdGuard says only to be used by specialists, which hackers/malware writers usually are), so besides selectively enabling cosmetic filtering, removing CSP changes set by any filter is recommended (this means the content security policies set by a website self are applicable): @@||*$csp [SPOILER="uBlock wiki documentation CSP modifier"] [ATTACH type="full"]262706[/ATTACH] [/SPOILER] Browsers do not perform a CSP check on extensions: [URL='https://sidanmor.com/how-browser-extensions-routinely-bypass-a-csp-content-security-policy-2d482767a672']How Browser Extensions Routinely Bypass a CSP (Content Security Policy)[/URL] [/QUOTE]
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