Partition network state by the network partition key (which consists of top frame site and possibly frame site), to protect against cross-site tracking through the use of side channels. "Network State" here includes connections (H1, H2, H3, websocket), the DNS cache, ALPN/H2 support data, TLS/H3 resumption information, Reporting/NEL configuration and uploads, and Expect-CT information. Explainer: https://github.com/MattMenke2/Explainer---Partition-Network-State/blob/main/README.md

Motivation

Cross-site tracking is a major privacy concern for users. This is a necessary part of addressing the problem.

Specification

Specification link


Specification being incubated in a Community Group

Status in Chromium

Internals>Network


In developer trial (Behind a flag) (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

Owner

Intent to Prototype url

Intent to Prototype thread

Comments

Note that the tracking bug covers more than this feature covers.

Last updated on 2021-04-24