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using java script to get browser font settings returns random value
Reported by
xiaoxinw...@gmail.com,
Apr 12 2017
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Issue descriptionUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36 Steps to reproduce the problem: 1. write js to get browser font setting value 2. the returned value is random every time 3. What is the expected behavior? The value is persistent so we will know a user is using the same device to log into a, e.g., e-commerce page, as he did before. What went wrong? I am with Threatmetrix, a fraud detection company. One of our key technology is to track whether a transaction is from a known device through web characteristics mapping. Font setting is one of those. We understand google does this because of privacy concern. If that is case, we wonder beside font information, what other web settings are no more available through js, i.e., parallel with this font randomization feature, what other privacy methods have been added to chrome. Did this work before? N/A Chrome version: 56.0.2924.87 Channel: n/a OS Version: OS X 10.12.3 Flash Version:
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Apr 13 2017
Could you please provide the code that you're using? That is in, your steps to reproduce, I'd like to better understand the specific API used in step 1.
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Apr 18 2017
Thanks for the reply. Unfortunately the code is production code and we can't share it. Any high level guide on how Chrome will improve the privacy will help. What are the data chrome will protect? Doc or link will be helpful. Thanks.
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Apr 18 2017
Thank you for providing more feedback. Adding requester "dglazkov@chromium.org" to the cc list and removing "Needs-Feedback" label. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
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Apr 18 2017
Removing the Blink label as this doesn't seem to be a Blink issue. xiaoxinwu2013@gmail.com, here's the privacy guide I'd found by searching for "Chrome privacy guide": https://www.google.com/chrome/browser/privacy/ I am still uncertain of the nature of the issue, leaving it to Privacy folks to decide.
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Apr 18 2017
Chrome is not using any fingerprinting thwarting technologies at the moment. Firefox is experimenting with it. https://bugzilla.mozilla.org/show_bug.cgi?id=1356381 Without additional instructions to reproduce, I suggest to close this issue as WontFix.
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Apr 24 2017
Please open a new bug with further instructions to reproduce if the issue still occurs. |
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Comment 1 by dullweber@chromium.org
, Apr 13 2017