According to the BBC, Android Smartphones since 2012 been targeted by malware dubbed Dark Caracal. The malware was designed to look like 'WhatsApp' and 'Signal' which had stolen gigabytes of data. This malware was aimed at Attorneys, Military Personal, Activists and Journalists. The stolen data ranged from call records, audio recordings documents and photos. Google states that it was confident that the infected apps did not come from the Google Play Store, but many users may have been fooled by similar looking sites to load the apps from. Remember there is an Android phone setting setting that you must turn off to allow the downloading of none Play Store Apps.
It is believe that the stolen data is being sent to Lebanon.