According to one or more embodiments, an electronic device comprises: a display device; a memory for storing at least one source code and a comparison file including any one of a modification and a vulnerability, in which each of at least one character string included in a patch file corresponding to the at least one source code is classified; and a processor functionally connected to the memory and the display device, wherein the processor can be set to load the at least one source code stored in the memory, compare a character string included in the comparison file corresponding to the at least one source code with a character string included in the source code, and provide, through an output device, at least one piece of information from among pieces of information about whether the identified source code is patched, the probability that the source code is patched, and a vulnerability in the source code, on the basis of the result of the comparison.