On Fri, Jan 16, 2015 at 12:41 AM, Jonas Sicking <jo...@sicking.cc> wrote:
> FWIW, a difference in load time of 100ms is quite big. Websites like > Amazon has measured significant changes in clickthrough rates when > they have experimentally increased loadtime by 100ms. > I believe that significant resources have been dedicated to the general problem, and for far less than that. I once had access to some numbers on this, and improvements in the small 10s of ms would easily justify the cost of a data center. I don't have specific numbers, but I believe that 3ms was considered enough cause to spend a fairly shocking amount money for a large company. 100ms is an absurdly large improvement. > That said, privacy is definitely very important. But given that this > has gone through privacy review by the mozilla privacy team I'll trust > that this feature has been implemented with privacy in mind. The extent to which browsing history can be recovered by a passive network observer based on this feature alone is hard to say. The fact that we spray DNS requests for every <a href=""> on a page is probably a worse leak...or, if you think about it a little more, providing of excellent k-anonymity. Good luck recovering any signal when there is that much noise. Critically, one-off or infrequent navigation events won't trigger the heuristic. _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
