[ttml2] CSS font-matching algorithm may introduce fingerprinting issues (#1202)

npdoty has just created a new issue for https://github.com/w3c/ttml2:

== CSS font-matching algorithm may introduce fingerprinting issues ==
Review of TTML2 2nd Edition noted many potential fingerprinting vectors: https://github.com/w3c/ttml2/issues/1189
(Whether those issues present a privacy risk depends on a clearer understanding of what information is revealed by content processors to whom.)

Addition of external font loading and the CSS font-matching algorithm could introduce those fingerprinting issues to IMSC 1.2.

Mitigations for fingerprinting in CSS are under discussion now in CSSWG and PING.

More info in email: https://lists.w3.org/Archives/Public/public-privacy/2020JanMar/0055.html

Please view or discuss this issue at https://github.com/w3c/ttml2/issues/1202 using your GitHub account

Received on Thursday, 2 April 2020 17:17:24 UTC