Antoine Bourlon
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kyotonio.bsky.social
Antoine Bourlon
@kyotonio.bsky.social
130 followers 61 following 22 posts
ADEBiS (attribution) engineer. Trying to measure the (non-)effectiveness of advertising. 発言は個人の見解
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kyotonio.bsky.social
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.
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.
searchengineland.com
June 12, 2025 at 6:56 AM
kyotonio.bsky.social
"Safari to block tracking by default in 2023"
Dumb AI summarizing fake news 💥
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...
www.linkedin.com
June 12, 2025 at 1:38 AM
kyotonio.bsky.social
"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...
News from WWDC25: WebKit in Safari 26 beta
Welcome to WWDC25!
webkit.org
June 10, 2025 at 9:10 AM
kyotonio.bsky.social
#pinkskyStory
February 2, 2025 at 4:51 AM
Reposted by Antoine Bourlon
sosukesuzuki.bsky.social
WebKit's bugzilla has been modernized!
bugs.webkit.org
WebKit Bugzilla
bugs.webkit.org
November 16, 2024 at 1:29 PM
kyotonio.bsky.social
"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...
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
www.journaldunet.com
November 13, 2024 at 12:19 PM
kyotonio.bsky.social
"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...
assets.publishing.service.gov.uk
November 13, 2024 at 12:03 PM
Reposted by Antoine Bourlon
thezedwards.bsky.social
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”🧵
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
November 13, 2024 at 1:50 AM
kyotonio.bsky.social
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.
October 24, 2024 at 1:23 AM
kyotonio.bsky.social
CHIPS flavored 3p cookies coming to WebKit?
github.com/WebKit/WebKi...

> Add a feature flag for supporting partitioned cookies
github.com/WebKit/WebKi...
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...
github.com
October 23, 2024 at 1:32 AM
kyotonio.bsky.social
"Some organizations operate multiple sites and require complicated interactions across those sites"
github.com/WebKit/WebKi...
[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...
github.com
March 7, 2024 at 5:13 AM
kyotonio.bsky.social
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."
github.com
February 28, 2024 at 6:50 AM
kyotonio.bsky.social
"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...
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...
github.com
February 27, 2024 at 4:38 AM
kyotonio.bsky.social
Looks like a surprisingly proper consent screen.
Consent screen for the Privacy Sandbox Topics API on Android
February 15, 2024 at 12:37 AM
kyotonio.bsky.social
Small ITP change. Data removed after 30 operational days instead of 7 for sites not loaded with cross-site link decoration.
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...
github.com
February 15, 2024 at 12:09 AM
kyotonio.bsky.social
👀
"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."
assets.publishing.service.gov.uk
February 13, 2024 at 2:16 AM