Antoine Bourlon's Avatar

Antoine Bourlon

@kyotonio

ADEBiS (attribution) engineer. Trying to measure the (non-)effectiveness of advertising. 発言は個人の見解

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25.12.2023
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Latest posts by Antoine Bourlon @kyotonio

Preview
Google's srsltid= parameter: What it means for SEO and attribution Is Google misattributing organic search traffic to Shopping? Learn why the new srsltid= parameter in organic listings has stirred controversy.

TIL
searchengineland.com/google-srslt...
Google (Search) adds a tracking parameter to organic links, Safari detects a parameter from a tracking (Google) domain and caps expiry of all document cookies to 24 hours (even after leaving the landing page, ITP bug?).
Team play.

12.06.2025 06:56 👍 1 🔁 0 💬 0 📌 0
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Safari to block tracking by default in 2023 | Eric Seufert posted on the topic | LinkedIn Per WWDC, Advanced Tracking and Fingerprinting Protection (ATFP), which was introduced to Safari Private Browsing mode in 2023, will be enabled by default in all browsing modes. Among other things, AT...

"Safari to block tracking by default in 2023"
Dumb AI summarizing fake news 💥

12.06.2025 01:38 👍 2 🔁 0 💬 0 📌 0
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News from WWDC25: WebKit in Safari 26 beta Welcome to WWDC25!

"Safari prevents known fingerprinting scripts from reading state that could be used for navigational tracking, such as query parameters and document.referrer."

Known tracking scripts and unknown scripts will be fine.
webkit.org/blog/16993/n...

10.06.2025 09:10 👍 2 🔁 0 💬 0 📌 0
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Adjust FilterLinkDecorationByDefaultEnabled default value by sysrqb · Pull Request #46144 · WebKit/WebKit ec56944 Adjust FilterLinkDecorationByDefaultEnabled default value https://bugs.webkit.org/show_bug.cgi?id=293834 rdar://problem/152338015 Reviewed by Wenson Hsieh. Move the preference to preview....

> Move the preference to preview
github.com/WebKit/WebKi...
> This change introduces a lower frequency deletion policy if a web site was always loaded with link decoration filtering
github.com/WebKit/WebKi...
> This patch extends that lifetime to 400 operational days.
github.com/WebKit/WebKi...

10.06.2025 08:55 👍 0 🔁 0 💬 0 📌 0

Are partitioned cookies in Safari expected to be set by third parties that also get user interactions as first party?

It seems that ITP includes partitioned cookies in its periodic removal of data from prevalent/classified (but not "known tracker") domains without user interaction.

17.04.2025 01:50 👍 0 🔁 0 💬 0 📌 0
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Tracking domains can set partitioned cookies by sysrqb · Pull Request #39828 · WebKit/WebKit 48ce9a3 Tracking domains can set partitioned cookies https://bugs.webkit.org/show_bug.cgi?id=286778 rdar://143914901 Reviewed by Wenson Hsieh. The vast majority of the partitioned cookies we curr...

Looks like Safari/iOS won't let "known trackers" use partitioned 3rd-party cookies.

"The vast majority of the partitioned cookies we currently see are being set by tracking domains. This doesn't benefit users and only causes more memory usage."
github.com/WebKit/WebKi...

03.02.2025 01:51 👍 0 🔁 0 💬 0 📌 0
Post image

#pinkskyStory

02.02.2025 04:51 👍 0 🔁 0 💬 0 📌 0
Release Notes for Safari Technology Preview 212 Safari Technology Preview Release 212 is now available for download for macOS Sequoia and macOS Sonoma.

🎉
> Added support for cookies’ Partitioned attribute (opt-in partitioned cookies).
webkit.org/blog/16445/r...

24.01.2025 03:59 👍 0 🔁 0 💬 1 📌 0
WebKit Bugzilla

WebKit's bugzilla has been modernized!
bugs.webkit.org

16.11.2024 13:29 👍 11 🔁 7 💬 1 📌 0
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Bounce tracking, user agent, IP… Chrome n'a pas que les cookies tiers dans le collimateur Le navigateur veut limiter les fonctionnalités qui permettent d'envoyer des signaux sur les internautes aux plateformes publicitaires

"With bounce tracking mitigations, browsers target redirects that are not desired by publishers. With us, the redirection is used to facilitate the creation of the cross-domain/cross-device 'first' cookie that belongs to our customers."
🤨
www.journaldunet.com/adtech/15359...

13.11.2024 12:19 👍 0 🔁 0 💬 0 📌 0

"Google has acknowledged that, by necessity (ie model training), the design of event level reports links limited conversion data back to a specific individual and event
on a publisher site."

"API will be mainly used by well-intentioned advertisers"

The problem is more on the ad network/pub side...

13.11.2024 12:03 👍 0 🔁 0 💬 0 📌 0
Email from Google to Adsense Partners with the text attached below. The section "First-Party Cookie Controls are Changing" is highlighted as well as the text "your first-party cookies will also be shared with Authorized Buyers" Full text of email:


Dear Partner,

We're making some changes to how first-party cookies are managed in your AdSense account to simplify controls and improve your access to third-party demand.

First-Party Cookie Controls Are Changing

We've combined the controls for enabling first-party cookies and personalization into one single control. This means that turning on the new control will enable first-party cookies for the publisher, share it with demand sources and enable all usages including personalization. The new control would be set to the existing personalization control to aid the transition.

Sharing with Authorized Buyers

Currently, the first-party cookies are shared with Google demand sources (Google Ads, Display & Video 360). Starting no earlier than December 12 2024, your first-party cookies will also be shared with Authorized Buyers. However, for the time being, this sharing will not include users in the EEA, Switzerland, UK, California, and some US states.

If you're already using first-party cookies for personalization, sharing with Authorized Buyers will be turned on by default. If you're only using first-party cookies without personalization, sharing will remain off.

You can find more detailed information about these changes and how AdSense uses first-party identifiers in the Help Center.

Sincerely,
The Google AdSense Team

Email from Google to Adsense Partners with the text attached below. The section "First-Party Cookie Controls are Changing" is highlighted as well as the text "your first-party cookies will also be shared with Authorized Buyers" Full text of email: Dear Partner, We're making some changes to how first-party cookies are managed in your AdSense account to simplify controls and improve your access to third-party demand. First-Party Cookie Controls Are Changing We've combined the controls for enabling first-party cookies and personalization into one single control. This means that turning on the new control will enable first-party cookies for the publisher, share it with demand sources and enable all usages including personalization. The new control would be set to the existing personalization control to aid the transition. Sharing with Authorized Buyers Currently, the first-party cookies are shared with Google demand sources (Google Ads, Display & Video 360). Starting no earlier than December 12 2024, your first-party cookies will also be shared with Authorized Buyers. However, for the time being, this sharing will not include users in the EEA, Switzerland, UK, California, and some US states. If you're already using first-party cookies for personalization, sharing with Authorized Buyers will be turned on by default. If you're only using first-party cookies without personalization, sharing will remain off. You can find more detailed information about these changes and how AdSense uses first-party identifiers in the Help Center. Sincerely, The Google AdSense Team

This week, Google publicly announced a change to how people will be tracked for online advertising - something so subtle that it hasn’t gotten any coverage yet to my knowledge. Attached is the email they sent to Adsense partners about “Rolling out first-party cookies sharing with Authorized Buyers”🧵

13.11.2024 01:39 👍 18 🔁 7 💬 5 📌 2
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Limit when experimental filtering is enabled by sysrqb · Pull Request #36535 · WebKit/WebKit 85886ec Limit when experimental filtering is enabled https://bugs.webkit.org/show_bug.cgi?id=282778 rdar://139461976 Reviewed by Wenson Hsieh. In general, this feature should be off, but add a bu...

😵‍💫
"In general, this feature should be off"
github.com/WebKit/WebKi...
testable → stable → internal → ?

13.11.2024 01:06 👍 0 🔁 0 💬 1 📌 0
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Set FilterLinkDecorationByDefaultEnabled to stable by sysrqb · Pull Request #34562 · WebKit/WebKit fb6cd8c Set FilterLinkDecorationByDefaultEnabled to stable https://bugs.webkit.org/show_bug.cgi?id=280742 rdar://134226694 Reviewed by Wenson Hsieh. Move the preference to stable and enable it by...

> Move the preference to stable and enable it by default, and tie it to tracking prevention.
github.com/WebKit/WebKi...

24.10.2024 01:26 👍 0 🔁 0 💬 1 📌 0
Post image

Link decoration filtering (removal of tracking parameters fbclid/gclid etc. from links) is now enabled by default in Safari TP 206 as part of ITP instead of private browsing only.

24.10.2024 01:23 👍 1 🔁 0 💬 1 📌 0
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WIP: Allow expressing more flavors of third-party cookie blocking by sysrqb · Pull Request #34812 · WebKit/WebKit 881cbd5 WIP: Allow expressing more flavors of third-party cookie blocking https://bugs.webkit.org/show_bug.cgi?id=281022 rdar://problem/137464465 Reviewed by NOBODY (OOPS!). Explanation of why th...

CHIPS flavored 3p cookies coming to WebKit?
github.com/WebKit/WebKi...

> Add a feature flag for supporting partitioned cookies
github.com/WebKit/WebKi...

23.10.2024 01:32 👍 1 🔁 0 💬 1 📌 0
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Adjust storage access quirk prompt based on feedback by sysrqb · Pull Request #24998 · WebKit/WebKit ae6662f Adjust storage access quirk prompt based on feedback https://bugs.webkit.org/show_bug.cgi?id=269970 rdar://123490355 Reviewed by Charlie Wolfe. Adjust storage access quirk prompt based on...

Nice
"Do you want to allow %@ websites to access one another's cookies and website data?"
github.com/WebKit/WebKi...

14.03.2024 05:31 👍 0 🔁 0 💬 0 📌 0
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[Experimental] Exercise storage access quirks for organizations by sysrqb · Pull Request #21287 · WebKit/WebKit 9d07c07 [Experimental] Exercise storage access quirks for organizations https://bugs.webkit.org/show_bug.cgi?id=265800 rdar://119141675 Reviewed by Alex Christensen. Some organizations operate mu...

"Some organizations operate multiple sites and require complicated interactions across those sites"
github.com/WebKit/WebKi...

07.03.2024 05:13 👍 0 🔁 0 💬 1 📌 0

I guess Conversion APIs won't work with Protected Audience ads ("in the long term")?

"In the long-term, these events could only be exfiltrated using an aggregate report."

28.02.2024 06:50 👍 0 🔁 0 💬 0 📌 0
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GA4 / "Google signals" · Issue #86 · google/ads-privacy Dear Google Ads team, Google Analytics (GA) is de facto the standard web campaign attribution tool in the industry, used by marketers to measure the outcome of their campaigns, even for campaigns r...

"We can confirm that Chrome’s deprecation of third party cookies will impact Google Analytics 4, and we specifically plan to make changes to features like Google Signals"
github.com/google/ads-p...

27.02.2024 04:38 👍 0 🔁 0 💬 0 📌 0
Consent screen for the Privacy Sandbox Topics API on Android

Consent screen for the Privacy Sandbox Topics API on Android

Looks like a surprisingly proper consent screen.

15.02.2024 00:37 👍 1 🔁 0 💬 0 📌 0
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Introduce DataRemovalFrequency for scheduled data removal in the NetworkProcess by sysrqb · Pull Request #21120 · WebKit/WebKit 4506123 Introduce DataRemovalFrequency for scheduled data removal in the NetworkProcess https://bugs.webkit.org/show_bug.cgi?id=265598 rdar://118998314 Reviewed by Sihui Liu. In the current imple...

Small ITP change. Data removed after 30 operational days instead of 7 for sites not loaded with cross-site link decoration.

15.02.2024 00:09 👍 0 🔁 0 💬 0 📌 0
An update on Privacy Budget. · mikewest/privacy-budget@8377d68

🤔
"Privacy Budget: No feedback provided this quarter."
developers.google.com/privacy-sand...

13.02.2024 02:20 👍 0 🔁 0 💬 0 📌 0

👀
"Google has announced that Privacy Budget is no longer being actively considered as part of its Privacy Sandbox proposals. As set out in the Commitments Decision, Privacy Budget was among those proposals aimed at combating fingerprinting."

13.02.2024 02:16 👍 2 🔁 1 💬 1 📌 0