An electronic device according to various embodiments of the present disclosure may include at least one sensor module including a transmitter, a receiver, a secure memory for storing data obtained by the receiver, and a security control module for controlling the transmitter based on whether a target memory in which the obtained data is to be stored is the secure memory. In an example, the sensor may be a biometric sensor in which the transmitter transits an optical signal to a user's finger or iris or the like to authenticate the user. If malicious code attempting to defeat security is detected, so that the secure memory is not set up as the target memory, the security control module may control the transmitter by restricting transmission of signals.