DETECTION SYSTEM AND METHOD THEREOF

A detection system and method thereof are provided. The detection method comprises the following steps: decompiling a first application package file to generate a plurality of first decompiled files, and the first decompiled files comprising a first decompiled code; comparing the first decompiled code with a second decompiled code of a second application package file to analyze a different code segment between the first decompiled code and the second decompiled code; classifying a changed code type corresponding to the different code segment according to a function call flow of the first decompiled code; loading a correspondence table and selecting at least one detection rule corresponding to the changed code type in the correspondence table; confirming a detection region of the first decompiled code according to the at least one detection rule; and detecting the detection region to generate a security detection result.