BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Sabre//Sabre VObject 4.5.8//EN
CALSCALE:GREGORIAN
LAST-MODIFIED:20260219T071438Z
BEGIN:VTIMEZONE
TZID:Asia/Tokyo
X-MICROSOFT-CDO-TZID:20
BEGIN:STANDARD
DTSTART:20241116T233000
TZOFFSETFROM:+0900
TZOFFSETTO:+0900
TZNAME:JST
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BEGIN:VEVENT
UID:96fd35c2-219d-4986-ba08-cc0de0871744
DTSTAMP:20260219T071438Z
SUMMARY:Private Cross-Origin/Site Prefetch
DTSTART;TZID=Asia/Tokyo:20251112T083000
DTEND;TZID=Asia/Tokyo:20251112T093000
DESCRIPTION:https://www.w3.org/events/meetings/96fd35c2-219d-4986-ba08-cc0d
 e0871744/\n\nPrefetching can significantly improve web performance by load
 ing resources before a user navigates to them\, but doing so across differ
 ent origins or sites can harm user privacy. Directly prefetching from a th
 ird-party server can leak a user's IP address and browsing context. \n\nTh
 e Prefetch spec states a need for IP anonymization and handwaves over how 
 it’s achieved\, leaving it implementation-defined [[1](https://wicg.gith
 ub.io/nav-speculation/prefetch.html#create-navigation-params-by-fetching)]
 . Let’s look at a couple proposals of how this works in the browser\, wi
 th a browser-provided proxy [[2](https://developer.chrome.com/blog/private
 -prefetch-proxy)] and a proposal for website-provided proxies [[3](https:/
 /github.com/WICG/nav-speculation/issues/368)].\n\nFinally\, we will discus
 s the path to enable private cross-origin/site prefetch across browsers. O
 pen discussion of privacy and security goals\, threat models\, and future 
 work in implementation and standardization.\n\n**Goal(s):**\nDiscussion\n\
 nAgenda\n\n1. Introduction\n2. Cross-origin/site prefetch\n3. Privacy-pres
 erving prefetch\n4. Future directions\n5. Discussion\n\n**Materials:**\n\n
 - [Slides](https://docs.google.com/presentation/d/1fBEJXtRe7qoJA5ISNYzAEE6
 gRYiJ9lOhDu9hdRYlCxM/edit?usp=sharing)\n- [Session proposal on GitHub](htt
 ps://github.com/w3c/tpac2025-breakouts/issues/42)
STATUS:CONFIRMED
CREATED:20251028T073921Z
LAST-MODIFIED:20260219T071438Z
SEQUENCE:3
ORGANIZER;CN=W3C Calendar;PARTSTAT=ACCEPTED;ROLE=NON-PARTICIPANT:mailto:nor
 eply@w3.org
LOCATION:Floor 4 - 404
CATEGORIES:TPAC 2025,Breakout Sessions
END:VEVENT
END:VCALENDAR