Google removed over 180 applications from the Play Store due to an ad fraud scheme that misled advertisers into paying for non-existent user engagement, affecting more than 56 million downloads. The fraudulent apps, known as vapor apps, were disguised as legitimate applications and featured persistent advertisements that made uninstallation difficult. Google collaborated with Integral Ad Science (IAS) to identify and eliminate these apps. Despite implementing security patches, the most effective solution was the complete removal of the offending applications. Google stated that Google Play Protect would warn users and disable these apps, even if they came from outside sources.