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- 46 Comments
much appreciated
11·3 days agoI’m still bit confused. How rendering could result in fingerprinting? If canvas and other fingerprinting is disabled of course. how is ad render different from rendering other element on a webpage
Web pages are not allowed to list your extensions. They can indirectly surmise you have certain extensions based on how your requests differ from expectations. For example, if they have advertisements, but your browser never actually makes any requests to load the images, CSS, JS or HTML for the advertisements, they can deduce you have an ad-blocker. That’s a datapoint they now have to ID you: “has an ad-blocker”
Now let’s say they have an ad they know AdBlockPlus allows, but uBlock Origin doesn’t. They see your browser doesn’t load that ad. Another datapoint: “Not using AdBlockPlus”.
Based on what requests go back and forth between your browser and their servers, they map out a unique fingerprint.
Thank you so much that makes sense
Sincere thanks
Most of those things cannot be collected through JavaScript.
Local time can.
RAM can only be approximated to protect user privacy. Edit: And it’s not available on Firefox.
OS+version are already in your browser’s user-agent string that is sent out with every request you make.
Machine hardware cannot be enumerated. JavaScript can try to guess your GPU based on what it can do with WebGL.
There is no way to get a serial number or similar.
To spoof timezone/OS+version/browser+version … and disable WebGL, use https://sereneblue.github.io/chameleon/
I guess spoofing will not make me stand out?
how does ad render in the background compromise privacy?
What HTML5 Canvas features does your browser support
Would you recommend disabling canvas?
by sensitive information I’m referring to
- local machine time
- local machine ram
- local machine operating system + version
- local machine hardware
- Serial Number
- Hardware ID
- UUID
- Windows Device ID
- Windows Product ID
- …
Can I prevent javascript from running specific command that retrieve these information?
I found chameleon which spoof local machine operating system + version and browser information. But I’m not sure about other information
Thanksalot my friend
2·5 days agoThe problem is with this plugin https://addons.mozilla.org/en-US/firefox/addon/chameleon-ext/ Everything works fine with it disabled.
The reason my chameleon breaks openwebui is because I changed a setting in it that it blocks all websocket connection
The problem is with this plugin https://addons.mozilla.org/en-US/firefox/addon/chameleon-ext/ Everything works fine with it disabled.
The reason my chameleon breaks openwebui is because I changed a setting in it that it blocks all websocket connection
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Thanksalot
thank you so much