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Why does Panopticlick report successful canvas hash in firefox 59

ron.wilson
ron.wilson
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I read recently that starting with FF 58 canvas hashing would be blocked. (https://www.helpnetsecurity.com/2017/10/30/firefox-browser-fingerprinting/) Today I updated to FF 59 and ran the browser fingerprinting tool from panopticlick.org which is part of the Electronic Frontier Foundation. (https://panopticlick.eff.org/). The results of the test show that canvas hashing was succesful and displays the hash. I tried to post a screen shot of the results but was unable to do so.

I read recently that starting with FF 58 canvas hashing would be blocked. (https://www.helpnetsecurity.com/2017/10/30/firefox-browser-fingerprinting/) Today I updated to FF 59 and ran the browser fingerprinting tool from panopticlick.org which is part of the Electronic Frontier Foundation. (https://panopticlick.eff.org/). The results of the test show that canvas hashing was succesful and displays the hash. I tried to post a screen shot of the results but was unable to do so.

Wšykne wótegrona (2)

Shadow110
Shadow110
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Sorry, no idea. Suggest If you have a bug, file a bug report. https://bugzilla.mozilla.org/ Bug Writing Guidelines : https://developer.mozilla.org/en-US/docs/Mozilla/QA/Bug_writing_guidelines

Please let us know if this solved your issue or if need further assistance.

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
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That article was based on a development version of Firefox 58.

As far as I know, this feature remains under the umbrella of the privacy.resistFingerprinting preference and is not a separate preference available without invoking that mode (which does many things).

Recent thread: Block canvas fingerprinting.