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Explaining the Privacy Sandbox Explainers

With the Chrome announcement of a two-year target timeline to kill the third-party cookie, we thought it would be useful to help make sense of Chrome’s proposals to address advertising use cases without third-party cookies. The Context First, at this time all four major browsers have publicly disclosed a privacy […]

Demystifying App-ads.txt

As you may have seen, on March 13th we released the final version of app-ads.txt, the mobile and native app follow-up to ads.txt. In this post I’d like to address some of the misconceptions and clarify the value prop around app-ads.txt. Background on ads.txt If you recall, ads.txt (Authorized Digital […]

Buyers: This Simple Step Can Help Mitigate Ad Fraud

By Jennifer Derke First launched in September 2017, ads.txt has seen rapid adoption by the digital advertising industry. There are over 2 million domains with ads.txt files, and buyers are committing to buying ads.txt inventory. However, full adoption of ads.txt requires that buyers are specifically validating each of the sellers […]

ads.txt aggregated files – the easy way to fight ad fraud

By Jennifer Derke Buyers and buy-side ad tech partners must develop a strategy of buying publisher inventory that is sold only by authorized digital sellers, as declared in publisher ads.txt files. IAB Tech Lab’s ads.txt aggregator is a simple, easy-to-use tool that helps by providing efficient delivery of aggregated ads.txt structured […]

Mythbusting ads.txt

By Sam Tingleff Recently there have been multiple stories in the industry press hinting that the ads.txt specification has a “loophole” or is otherwise flawed in a way that is being exploited within the mobile app programmatic ecosystem. The Forensiq report specifically, and miscommunication in the press, was flawed in […]

IAB Tech Lab Launches Ads.txt Aggregator As Part of Ongoing Effort to Combat Ad Fraud

  New Tool Provides Comprehensive Resource to Confirm Authorized Ad Sellers   NEW YORK, NY (May 9, 2018) –  The IAB Technology Laboratory today released ads.txt aggregator – a critical tool to support its ads.txt anti-fraud initiative. This service provides daily updates on publishers’ approved ad sellers, making it easier for […]

ads.txt aggregator

/*! elementor – v3.18.0 – 08-12-2023 */ .elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px} Ads.txt Aggregator IAB Tech Lab offers access to an aggregation of ads.txt, app-ads.txt and sellers.json files published around the internet. The ads/app-ads/sellers aggregator is now a part of the IAB Tech Lab’s Transparency Center. What Is […]

ads.txt – Authorized Digital Sellers

/*! elementor – v3.18.0 – 08-12-2023 */ .elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px} Ads.txt – Authorized Digital Sellers About Ads.txt and App-Ads.txt Last updated: January 15, 2024 Ads.txt/App-Ads.txt Version 1.1 To Support Owner and Manager Domains is Ready to Implement The update includes two new values for publishers to […]

Privacy and Cookie Policy

(Last updated: August 2025) 1. INTRODUCTION Who are we? We are IAB Technology Laboratory, Inc., a company incorporated and registered in the United States of America, with registered office at 116 East 27th Street, 7th Floor, New York 10016. Where we decide the means or purpose of processing your personal […]

IAB/ABC International Spiders and Bots List

IAB/ABC International Spiders and Bots List Last updated: April 18, 2024 What is it? The IAB Spiders and Robots list helps companies identify automated traffic such as search engine crawlers, monitoring tools, and other nonhuman traffic that they don’t want showing up in their analytics and billable counts. Additionally, using […]

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