Blog post and analysis by Vojtech Bocek and Nikolaos Chrysaidos
When you get a brand new phone, you expect it to be clean from any malware and adware. Unfortunately, this is not always the case. The Avast Threat Labs has found adware pre-installed on several hundred different Android device models and versions, including devices from manufacturers like ZTE and Archos. The majority of these devices are not certified by Google.