Cybercrime spread Xhelper, a new really persistent Android dropper Symantec cyber security experts: The malware is able to hide and reinstall itself, downloading other… Cybercrime spread Xhelper, a new really persistent Android dropper 31 October 2019 Francesco Bussoletti Cyber, Defence and Security Symantec cyber security experts: The malware is able to hide and reinstall itself, downloading other threats and display ads. It already infected 45,000 devices in past 6 months.