Would be a request of 'dailyUpdateUrl' credentialed by a browser?

[Aleksei-Gorbushin-at-Walmart]

According to 1.2 Interest Group Attributes section

The dailyUpdateUrl provides a mechanism for the group's owner to periodically update the attributes of the interest group.

Does it mean a browser includes first-party cookies making a such call daily?

If it does not and this request is uncredentialed (cookieless), how could the group's owner know which values should be set to userBiddingSignals for example?

[Aleksei-Gorbushin-at-Walmart]

@michaelkleber,
Do you mean this "daily update mechanism" in your comment on #269?

[michaelkleber]

The interest group updates are uncredentialed (do not include cookies). As you point out, this means they are probably not useful for setting userBiddingSignals. But they would be an excellent way for the womens-running-shoes interest group to start showing you an ad about a relevant sale, even if the sale wasn't announced yet when you were added to the group.

(And yes, this is the mechanism I referred to in #269)

[michaelkleber]

Note that idea (b) in #333 would essentially allow credentialed updates (by removing the k-anonymity thresholding). But, as that issue points out, this could only happen if the updates were handled by yet another instance of Trusted Server infrastructure.