Last Update: 04/05/2026 at 2:50 PM EST
Ad Tech Shifts Toward Privacy
Coverage from TechBullion, Electronic Frontier Foundation, and others
Articles
7
Latest Article
03/10
Active Days
2315
Executive Summary
Ad tech is moving from tracking-based targeting toward first-party data, clean rooms, and stricter controls as platforms and regulators curb surveillance
- Ad IDs let brokers link app and web activity to devices and build location profiles
- Fog and Venntel sold ad ID-linked data to law enforcement for surveillance
- A St. Louis officer said the device ID could help identify the owner
- Apple now defaults iOS users to ad ID opt-out, while Android still requires manual opt-out
- ATT in iOS 14.5 cut access to IDFA and pushed advertisers toward other measurement methods
- Google launched Privacy Sandbox APIs in 2019 and later paused full Chrome cookie deprecation
- Retail media, CDPs, contextual ads, and clean rooms rose as third-party signals weakened
Quick Facts
- What: Shift from tracking ads to privacy-preserving targeting
- Where: United States and major digital ad markets
- Why: Third-party tracking is fading and privacy rules are tightening
- Who: Ad platforms brokers regulators and law enforcement
- When: From 2021 through 2025
Coverage Timeline: 2315 Days
Featured Article
Brightcove agreed to a $233 million take-private acquisition by Bending Spoons as 2024 ad tech and martech M&A rose on increased digital ad spend and first-party data demand.
Additional Articles
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EFF and reporting show U.S. data brokers sold ad ID-linked location datasets to state and local law enforcement, enabling re-identification and surveillance in St. Louis and elsewhere.
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Apple implements App Tracking Transparency in 2021, restricting IDFA access and driving global shift toward first party data and privacy preserving advertising.
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Luma Partners data in 2024 shows ad tech M&A accelerating in Q3, led by buyers seeking first-party data and AI-enhanced advertising capabilities.
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In 2025, ad-tech, media, and data companies worldwide executed major mergers and acquisitions that concentrated identity, consent, and analytics tools shaping digital advertising privacy practices.
Advertisers acquire ad tech and martech firms this year to boost personalized ads worldwide.
During 2025 ad tech earnings and briefings, executives including Criteo and DoubleVerify linked AI-enabled advertising performance to identity graphs and proprietary targeting data.