[webkit-dev] HSTS user tracking

[Michael Catanzaro]

Hi,

I have a question about [1]. This article states:

> In early December, Apple released an update to iOS and Safari which 
> disabled Criteo’s ability to exploit HSTS. This led to Criteo 
> revising down their revenue forecasts and a sharp fall in their share 
> price.

How exactly does this update work? (We'll possibly want to adjust 
libsoup's forthcoming HSTS implementation accordingly.)

Thanks,

Michael

[1] 
https://www.eff.org/deeplinks/2017/12/arms-race-against-trackers-safari-leads-criteo-30