Re: [csswg-drafts] [css-fonts] incorporate mitigations for font based fingerprinting (#4055)

> But couldn't browsers provide that performance benefit by caching web fonts?

Some benefit, for repeat visits to the same website.  For visits to different sites, browsers are switching to a model where the cache of 3rd party resources gets partitioned by the site making the request (to avoid security issues where sites could guess at your browsing history by timing how long it takes to download a resource from that domain). Even without that security enhancement, cross-site caching fails if the site has done anything unique re subsetting the font.

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Received on Monday, 23 September 2019 01:46:19 UTC