The Wifi hotspot in Lenovo SHAREit before 3.5.48_ww for Android, when configured to receive files, does not require a password, which makes it easier for remote attackers to obtain access by leveraging a position within the WLAN coverage area.
packetstormsecurity.com/files/135378/Lenovo-ShareIT-Information-Disclosure-Hardcoded-Password.html
seclists.org/fulldisclosure/2016/Jan/67
www.coresecurity.com/advisories/lenovo-shareit-multiple-vulnerabilities
www.securityfocus.com/archive/1/537365/100/0/threaded
support.lenovo.com/us/en/product_security/len_4058