Google Play has removed up to 50 apps that once downloaded plagued systems with full-screen ads. More than 50 malicious apps have been discovered on the Google Play app marketplace, peddling adware to millions of Android victims. The 50 adware apps, which have been since removed, include fitness, photoshopping and gaming apps, and were installed a total of 30 million times, researchers at Avast said in a Tuesday analysis. Adware is a tricky type of malware which once downloaded persistently displays full-screens and tries to persuade users to install further adware-ridden apps.
Source: https://threatpost.com/google-play-adware-30-million/144098/