Cliqz, the German privacy-focused browser maker backed by Mozilla, buys Ghostery browser extension, which monitors and lets you block tracking scripts on sites
Allison Schiff / AdExchanger :
Context & Ripple Effects
Cliqz's purchase of Ghostery continues a consolidation run in the ad-blocking world: a year earlier, the Adblock extension for Chrome and Safari was sold to an unidentified buyer and folded into Adblock Plus' Acceptable Ads program, signaling that popular blockers had become acquirable assets rather than volunteer projects. For Cliqz, a German browser startup backed by Mozilla, Ghostery's tracking-script blocklists are the raw material its privacy-focused browser needs.
The deal also sets up the arc the related coverage traces: within months Ghostery adds heuristic, AI-driven script blocking on top of its blacklists, then goes open source with an opt-in deals-and-insights revenue model in 2018 — and by 2020, when Cliqz shuts down its own browser and search engine, it keeps Ghostery running as the surviving asset.
First-order effects
- Ghostery's tracking-detection data now feeds directly into Cliqz's own anti-tracking browser, giving the German startup blocking capability it would otherwise have had to build itself.
Second-order effects
- Ad-tech firms face a further shrinkage of reachable inventory as another major blocker falls under a browser maker's control, following the same ownership-consolidation path Adblock took into the Acceptable Ads fold.
Third-order effects
- The pattern that holds through the corpus is that extension brands outlive the browsers that acquire them — Ghostery survives Cliqz's 2020 browser shutdown, and Mozilla's later acquisition of Anonym's privacy-preserving ad tools shows the same intermediating position being rebuilt at the browser layer.
The trend: Anti-tracking tools are consolidating from standalone extensions into vertically integrated browser assets, with the acquired brands proving more durable than the browsers that bought them.