Google removes 85 adware apps that were installed a total of 9M+ times, according to Trend Micro
Context & Ripple Effects
Trend Micro's report forced Google's hand: 85 Play Store apps serving hidden adware, with more than 9M combined installs, came down in one sweep. The move fits a pattern that was accelerating through this coverage window — weeks later Google banned another 29 apps downloaded 4.3M+ times for serving scam ads, and by mid-2019 hidden adware had surfaced in 238 CooTek apps with 440M+ installs that made phones nearly unusable.
What makes this wave notable is scale creep: by early 2020 Google was removing roughly 600 Android apps with 4.5B+ installs and banning their developers outright for ad fraud and disruptive ads, and by late 2022 researchers were still finding 75 ad-fraud apps on Google Play plus 10 on Apple's App Store with 13M installs. Each takedown follows the same trigger — an outside researcher flags the abuse, then the store acts.
First-order effects
- Users who installed the 85 apps — 9M+ devices in total — stop serving background adware once Google pulls them from the Play Store, though already-installed copies may persist until manually removed.
- The developers behind those apps lose their distribution channel and any ad revenue flowing from the installs, since Play Store removals in this pattern typically come with account-level bans.
Second-order effects
- Advertisers buying programmatic inventory face growing doubt about where their spend actually renders, since each researcher finding shows fraudulent apps monetizing real ad networks.
- Google faces pressure to shift enforcement upstream — better pre-publication review and behavioral scanning — because reactive takedowns only arrive after researchers do the detection work.
Third-order effects
- If the pattern holds, Play Store quality control becomes a permanent arms race between ad-fraud developers and a detection pipeline increasingly run by third-party security firms like Trend Micro rather than the store itself.
- Repeated developer bans push adware operations toward faster churn — new developer accounts and repackaged apps — making install-count-based enforcement a lagging indicator of actual abuse.
The trend: Mobile app store enforcement is settling into a reactive rhythm driven by outside security researchers, with ad-fraud takedowns recurring at ever-larger scale across both Google Play and Apple's App Store.