Home The Big Story The Big Story: First-Party Cookie Camouflage

The Big Story: First-Party Cookie Camouflage

SHARE:
The Big Story podcast

 Within the infrastructure to create and store first-party cookies, it’s possible for third-party tech to camouflage as a first-party cookie, taking advantage of the longer storage time before first-party cookies decay.

But Apple is wise to this camouflage attempt. Its WebKit team, which operates the codebase for the Safari browser, made a tweak that will treat a subset of first-party cookies as third-party cookies and boot them out after a seven-day period. The reason? According to Apple, they can “cloak third-party requests as first-party and store cookies in the first-party context.”

The move caught ad tech’s attention, even though it feels like the latest in a cat-and-mouse game between vendors and Apple over its decision to all but bar third-party tracking.

Plus, with Apple’s moves to preserve privacy perceived as having an ulterior motive (it has a growing ads business), the company is under growing scrutiny, including in France over how its practices in the advertising realm could be anticompetitive. The French Competition Authority is weighing antitrust action against Apple.

The context conundrum

It seems like publishers can’t catch a break when it comes to data leakage. For years, they have had to contend with third-party cookies tracking their readers across the web, using what they’re reading to better target them. Now, their sites are being scraped to create contextual segments, and publishers once again feel out of control as others package and use their sites’ contextual data.

The Association of Online Publishers had enough. The UK industry body wrote an open letter condemning the practice and calling for publishers to be compensated for this use of their intellectual property. We discuss what publishers think of the letter and the practice.

If the AOP fired the opening shot, who else might take up arms? We discuss how publishers, buyers and industry trade groups could add momentum to this pushback against third parties packaging publishers’ contextual data.

Must Read

The Rise Of Principal Media And The End Of The Agencies As We Knew Them

Ad agency holding companies are among the most adaptable businesses out there. In recent years holdcos like Publicis, WPP and Omnicom-IPG have stretched our notions of what an agency business even is exactly.

B2B symbols in magnifying glass, B2B Marketing, Business to business, e-commerce, Business Company Commerce Technology digital Marketing, business action plan Strategy, internet online marketing.

How One Agency Startup Uses Real-Time Data To Develop Real-Time Ads

Audience preferences are constantly evolving. So why not ads that evolve in real time, too? No, really.

MyFitnessPal Wants To Start The Health And Wellness Subsector Of Retail Media

MyFitnessPal has just announced the launch of a data-driven advertising business that draws on its wealth of user-provided meal planning, fitness and nutrition data.

Privacy! Commerce! Connected TV! Read all about it. Subscribe to AdExchanger Newsletters
A comic depicting people in suits setting money on fire as a reference to incrementality: as in, don't set your money on fire!

Smartly Is Planning To Acquire INCRMNTAL Within The Next Few Weeks

Smartly is acquiring INCRMNTAL, an incrementality measurement startup founded in Tel Aviv in 2019 that focuses on causal lift rather than user-level tracking.

Viant Had A Good Q4, But Still Needs To Punch Up At Bigger Platforms

Viant reported its Q4 and full-year 2025 earnings on Wednesday evening and investors appeared pleased.

Puzzle pieces connected together. Two puzzle pieces with cables coming together on yellow background. Problem solving concept, business solutions and ideas. Vector illustration.

The Boring Infrastructure That Could Make Agentic AI Happen For Ad Tech

AI agents are moving fast, but MadConnect says ad tech’s slow, messy plumbing still needs an overhaul before agentic marketing can really work.