On 3/3/25 10:32 AM, Andrew Liu wrote:
Done, requested reviews.
On Sunday, March 2, 2025 at 9:35:30 PM UTC-5 Domenic Denicola wrote:
Can you request Privacy, WP Security, Enterprise, Debuggability,
and Testing review gates in ChromeStatus?
On Friday, February 28, 2025 at 7:45:44 AM UTC+9 Andrew Liu wrote:
Fixed the link in chromestatus, thanks.
On Thursday, February 27, 2025 at 5:02:41 PM UTC-5 Mike Taylor
wrote:
On 2/27/25 3:46 PM, Chromestatus wrote:
Contact emails
l...@chromium.org, ort...@chromium.org,
sv...@chromium.org, rtarp...@chromium.org
Explainer
https://github.com/privacycg/nav-tracking-mitigations/issues/41#issuecomment-2504329542
<https://github.com/privacycg/nav-tracking-mitigations/issues/41#issuecomment-2504329542>
Specification
https://privacycg.github.io/nav-tracking-mitigations/#bounce-tracking-mitigations
<https://privacycg.github.io/nav-tracking-mitigations/#bounce-tracking-mitigations>
Can you point out which section covers the stateless bounce tracking?
It's not obvious to me.
Summary
Bounce tracking mitigations for the HTTP cache is an
extension to existing anti-bounce-tracking behavior. It
removes the requirement that a suspected tracking site
must have performed storage access in order to activate
bounce tracking mitigations. Chrome's initially proposed
bounce tracking mitigation solution triggers when a site
accesses browser storage (e.g. cookies) during a redirect
flow. However, bounce trackers can systematically
circumvent such mitigations by using the HTTP cache to
preserve data. By relaxing the triggering conditions for
bounce tracking mitigations, the browser should be able
to catch bounce trackers using the HTTP cache.
Blink component
Privacy>NavTracking
<https://issues.chromium.org/issues?q=customfield1222907:%22Privacy%3ENavTracking%22>
TAG review
https://github.com/w3ctag/design-reviews/issues/862
<https://github.com/w3ctag/design-reviews/issues/862>
It looks like
https://github.com/w3ctag/design-reviews/issues/1062
<https://github.com/w3ctag/design-reviews/issues/1062> is
the correct link.
TAG review status
Not applicable
Risks
Interoperability and Compatibility
None
/Gecko/: Positive
(https://github.com/mozilla/standards-positions/issues/835
<https://github.com/mozilla/standards-positions/issues/835>)
What is the difference between 835 and
https://github.com/mozilla/standards-positions/issues/1186? Is 1186
supposed to cover this particular change (not requiring storage access /
considering the HTTP cache)? If so, could it be edited to reflect that?
/WebKit/: No signal
(https://github.com/WebKit/standards-positions/issues/214
<https://github.com/WebKit/standards-positions/issues/214>)
Could we add a comment to this old issue informing them of this proposed
change?
/Web developers/: No signals
/Other signals/:
WebView application risks
Does this intent deprecate or change behavior of existing
APIs, such that it has potentially high risk for Android
WebView-based applications?
None
Debuggability
There exists a section in Chrome devtools to try out
bounce tracking mitigations (see link for context). It
currently checks for the current (stateful) behavior and
will be updated after the fact. Progress for devtools
parity is tracked in https://crbug.com/399681359.
https://developer.chrome.com/blog/bounce-tracking-mitigations-dev-trial#how_can_i_tell_if_my_site_is_impacted
<https://developer.chrome.com/blog/bounce-tracking-mitigations-dev-trial#how_can_i_tell_if_my_site_is_impacted>
Will this feature be supported on all six Blink
platforms (Windows, Mac, Linux, ChromeOS,
Android, and Android WebView)?
No
This feature is supported on all platforms except WebView.
Is this feature fully tested by
web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?
Yes
https://wpt.fyi/results/nav-tracking-mitigations?label=master&label=experimental&aligned&q=nav-tracking-mitigations
<https://wpt.fyi/results/nav-tracking-mitigations?label=master&label=experimental&aligned&q=nav-tracking-mitigations>
Flag name on about://flags
None
Finch feature name
DIPS
Requires code in //chrome?
False
Tracking bug
https://crbug.com/40264244
Launch bug
https://launch.corp.google.com/launch/4354304
<https://launch.corp.google.com/launch/4354304>
Estimated milestones
Shipping on desktop 134
Anticipated spec changes
Open questions about a feature may be a source of future
web compat or interop issues. Please list open issues
(e.g. links to known github issues in the project for the
feature specification) whose resolution may introduce web
compat/interop risk (e.g., changing to naming or
structure of the API in a non-backward-compatible way).
https://github.com/privacycg/nav-tracking-mitigations/pull/95
<https://github.com/privacycg/nav-tracking-mitigations/pull/95>
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/6299570819301376?gate=5206396818423808
<https://chromestatus.com/feature/6299570819301376?gate=5206396818423808>
Links to previous Intent discussions
Intent to Prototype:
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/67644489.2b0a0220.30ecd.0256.GAE%40google.com
<https://groups.google.com/a/chromium.org/d/msgid/blink-dev/67644489.2b0a0220.30ecd.0256.GAE%40google.com>
This intent message was generated by Chrome Platform
Status <https://chromestatus.com>.
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