Preventing figerprinting through the use of zero-width characters

Suggestions and feature requests for the Pale Moon browser

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Tomaso
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Preventing figerprinting through the use of zero-width characters

Unread postby Tomaso » Thu, 12 Apr 2018, 19:29

Article @ gHacks.net:
https://www.ghacks.net/2018/04/05/how-t ... rprinting/

Article @ BleepingComputer.com:
https://www.bleepingcomputer.com/news/s ... g-attacks/

Proof-of-Concept demo:
https://umpox.github.io/zero-width-detection/

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Any chance of a possible countermeasure in Pale Moon?

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Moonchild
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Re: Preventing figerprinting through the use of zero-width characters

Unread postby Moonchild » Fri, 13 Apr 2018, 06:12

Hmm.. this would require copied/pasted text to be manually transferred by the user between two locations both under control of the tracker to be even usable. It can't be used for fingerprinting in the normal way, and is an edge case at best. It will also not provide any more information to a tracker than potentially knowing the origin of the pasted text. Is that useful?

The only potential "countermeasure" would be to remove known "invisible" characters from copied text, but that's likely going to screw up clipboard operations of data that require (just as invisible to the user) control characters to be present, so whatever is done for it is inevitably going to break something else.
Last edited by Moonchild on Fri, 13 Apr 2018, 06:14, edited 1 time in total.
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