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

Comic: Header Bidding Rapper (Wrapper!)

Microsoft To Stop Caching Prebid Video Files, Leaving Publishers With A Major Ad Serving Problem

Most publishers have no idea that a major part of their video ad delivery will stop working on April 30, shortly after Microsoft shuts down the Xandr DSP.

AdExchanger's Big Story podcast with journalistic insights on advertising, marketing and ad tech

Guess Its AdsGPT Now?

Ads were going to be a “last resort” for ChatGPT, OpenAI CEO Sam Altman promised two years ago. Now, they’re finally here. Omnicom Digital CEO Jonathan Nelson joins the AdExchanger editorial team to talk through what comes next.

Comic: Marketer Resolutions

Hershey’s Undergoes A Brand Update As It Rethinks Paid, Earned And Owned Media

This Wednesday marks the beginning of Hershey’s first major brand marketing campaign since 2018

Privacy! Commerce! Connected TV! Read all about it. Subscribe to AdExchanger Newsletters
Comic: Header Bidding Rapper (Wrapper!)

A Win For Open Standards: Amazon’s Prebid Adapter Goes Live

Amazon looks to support a more collaborative programmatic ecosystem now that the APS Prebid adapter is available for open beta testing.

Gamera Raises $1.6 Million To Protect The Open Web’s Media Quality

Gamera, a media quality measurement startup for publishers, announced on Tuesday it raised $1.6 million to promote its service that combines data about a site’s ad experience with data about how its ads perform.

Jamie Seltzer, global chief data and technology officer, Havas Media Network, speaks to AdExchanger at CES 2026.

CES 2026: What’s Real – And What’s BS – When It Comes To AI

Ad industry experts call out trends to watch in 2026 and separate the real AI use cases having an impact today from the AI hype they heard at CES.