“Bitdefender's security researchers have identified a large-scale ad fraud campaign that deployed hundreds of malicious apps in the Google Play Store, resulting in more than 60 million downloads total. The apps display out-of-context ads and even try to persuade victims to give away credentials and credit card information in phishing attacks.” https://www.bitdefender.com/en-us/blog/labs/malicious-google-play-apps-bypassed-android-security