Fig. 9From: Using IM-Visor to stop untrusted IME apps from stealing sensitive keystrokesSTIE initialization. Hooks in the IMF and event subsystem are invoked to notify the pre-IME Guard in secure world to initialize the STIE. In modern mobile devices with a touch screen, we assume that a user intends to type text when he or she taps on touch screen after a soft keyboard has been shown upBack to article page