> On Jun 3, 2020, at 5:21 PM, Kaustubha Govind <kaustub...@chromium.org> wrote: > > Hi Maciej, > > Thanks for feedback. > > We had previously started the incubation process in WICG, and it was just > moved there: https://github.com/WICG/first-party-sets > <https://github.com/WICG/first-party-sets> > > In addition, I have also filed a Proposal Issue in PrivacyCG: > https://github.com/privacycg/proposals/issues/17 > <https://github.com/privacycg/proposals/issues/17> Thanks! I expressed support for the above proposal.
> > Regarding your concern about preventing (a) Bad faith claims, and (b) The > “500 domains” problem. These are absolutely cases that we would consider > "unacceptable sets", and our initial thinking was that this would be covered > by the "UA Policy" and be subject to review during the > acceptance/verification process. In this version of the proposal, we > attempted to build maximum flexibility for UAs; but it has since become clear > that browsers find this problem worth solving, and also deem it important to > agree on a common policy. We are currently working on an initial draft of a > policy, and will bring that for discussion when ready. That sounds like a positive development, looking forward to it. > > Kaustubha > > > > > > On Wed, May 27, 2020 at 3:16 PM Maciej Stachowiak <m...@apple.com > <mailto:m...@apple.com>> wrote: > > (1) I notice that this proposal still exists only in a random personal repo. > Could it please be contributed to an appropriate standards or incubation > group? Privacy CG would almost certainly welcome this, and I’m sure it would > be easy to move to WICG as well. There doesn’t seem to be a reason to keep > the proposal in this “pre-incubation” state. > > (2) As discussed in the Privacy CG Face-to-Face, there are two key problems > to solve with First Party Sets or any similar proposals: > (a) Bad faith claims. How to prevent domains that are not actually > owned and controlled by the same party from making claims of being related? > For example, an ad network could get its top publishers to enter an > association to regain a certain level of tracking powers. > (b) The “500 domains” problem. If a first party owns domains that > aren’t obviously related and that appear to different and distinct brands to > the user, then the user won’t expect to be tracked across them. (Problem > named such because of a party known to have hundreds of domains that mostly > appear to be totally distinct brands). Users would expect both transparency > and control over this. > > The explainer does not really give solutions to these problems. Rather, it > defers entirely to each individual browser to define a policy to solve these > problems. Deferring to individual browsers on such key points is problematic > in a few ways: > (i) It doesn’t seem right for a proposed web standard to solve only the > easy problem of syntax, and leave the hardest technical problems of semantics > to each browser separately. > (ii) Deferring in this way is bad for interop. > (iii) It’s not entirely clear if there exists any policy that suitably > addresses these problems. By only speculating about policies, the explainer > fails to provide an existence proof that it is implementable. > (iv) If sites come to depend on First Party Sets for correct behavior, > there is a risk that every UA will have to adopt a policy that’s the most > permissive of any, or that copies the most popular UA, for the sake of > compatibility. Thus, leaving this open may not in fact provide a useful > degree of freedom. > > Given these issues, I don’t think we’d implement the proposal in its current > state. That said, we’re very interested in this area, and indeed, John > Wilander proposed a form of this idea before Mike West’s later re-proposal. > If these issues were addressed in a satisfactory way, I think we’d be very > interested. It does seem that binding strictly to eTLD+1 is not good enough > for web privacy features. Driving these issues to resolution is part of why > we’d like to see this proposal adopted into a suitable standards or > incubation group. > > Regards, > Maciej > > >> On May 27, 2020, at 9:33 AM, Lily Chen <chl...@chromium.org >> <mailto:chl...@chromium.org>> wrote: >> >> Hi WebKit-dev, >> >> We are requesting WebKit's position on the First-Party Sets proposal as >> described in the explainer . Feedback  was provided on a previous >> version of the proposal, which has since been revised. The TAG review thread >> is here . >> >> Thanks! >> >>  Explainer: https://github.com/krgovind/first-party-sets >> <https://github.com/krgovind/first-party-sets> >>  Previous feedback: https://github.com/krgovind/first-party-sets/issues/6 >> <https://github.com/krgovind/first-party-sets/issues/6> >>  TAG review: https://github.com/w3ctag/design-reviews/issues/342 >> <https://github.com/w3ctag/design-reviews/issues/342> >> _______________________________________________ >> webkit-dev mailing list >> firstname.lastname@example.org <mailto:email@example.com> >> https://lists.webkit.org/mailman/listinfo/webkit-dev >> <https://lists.webkit.org/mailman/listinfo/webkit-dev> >
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