[tor-bugs] #13875 [Tor Browser]: Tor Browser DPI spoofing is broken if the user changes zoom level

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Dec 4 09:10:26 UTC 2014


#13875: Tor Browser DPI spoofing is broken if the user changes zoom level
-----------------------------+--------------------------------
     Reporter:  isis         |      Owner:  tbb-team
         Type:  defect       |     Status:  new
     Priority:  normal       |  Milestone:
    Component:  Tor Browser  |    Version:
   Resolution:               |   Keywords:  tbb-fingerprinting
Actual Points:               |  Parent ID:
       Points:               |
-----------------------------+--------------------------------

Comment (by poly):

 hello, poly here. Sorry for the late reply, I'm just getting used to the
 trac system.

 I created a writeup (with photos!) to clarify the windows dpi scaling and
 another POC to show that the actual zoom level can be inferred. Skip to
 the description section for the relevant stuff. Can anyone try the second
 POC and comment on how reliable it is?

 http://darkdepths.net/dpi-leaks-in-tor-browser.html

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13875#comment:4>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online


More information about the tor-bugs mailing list