Adware is a form of spyware that collects information about a user in order to display advertisements. More than a fifth (22%) of the top apps in the Google Play store are adware. Google has plenty of incentive to allow apps with aggressive advertising practices. Google wants to encourage developers to expand offerings in their app store and developers often profit from free apps through advertising. AV vendors are under pressure to show they are adding value by identifying malicious, suspicious and/or unwanted content. As such, there is a big gap between Google and AV vendors when it comes to adware.”]