Security expert Ravi Borgaonkar has demonstrated that one of the Android-based smartphones from Samsung can be remotely reset to factory settings. The attack is shown to be possible due to a weak point in Samsung’s proprietary dialler in the various smartphone models which acts on USSD (Unstructured Supplementary Service Data) codes without asking the user. The USSD code *2767*3855# will immediately start a range of Samsung phones factory-resetting. Such a crafted link could be lurking on a web page, behind QR code or in an NFC tag.”]
Source: http://www.h-online.com/security/news/item/Remote-resetting-a-Samsung-phone-made-easy-1717115.html