[tbb-bugs] #13400 [Tor Browser]: Canvas Fingerprinting: fonts

Tor Bug Tracker & Wiki blackhole at torproject.org
Mon Oct 13 18:13:50 UTC 2014

#13400: Canvas Fingerprinting: fonts
 Reporter:  cypherpunks  |          Owner:  tbb-team
     Type:  defect       |         Status:  new
 Priority:  major        |      Milestone:
Component:  Tor Browser  |        Version:  Tor:
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
 As I know, TBB blocks ctx.getImageData. But I think it is not enough.
 Look at this.
 I tried this, the fingerprint survives restart of TBB.
 I don't know, wheither this fingerprint can be used to identify user's OS
 (at least it can be used to identify fonts) and hardware, but it is
 differen than the one generated with the browser in the OS.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13400>
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