Avast Threat Labs has analysed mobile adware which is pre-installed on thousands of new Android phones around the world. The adware goes by the name Cosiloon and creates an overlay to display an ad over a webpage within the users browser. In the past month alone, Avast has seen the latest version of the adware on around 18,000 devices belonging to Avast users located in more than 100 countries including Russia, Italy, Germany, the UK, as well as some users in the U.S.”]
Source: https://informationsecuritybuzz.com/news/avast-android-devices-ship-with-pre-installed-malware/