The development of information technology is very rapid and gives a positive look to the success of the entity in various business fields. This journal explains how an entity can manage network usage in order to provide maximum benefits for its business through wireshark and identify data leaks. Wireshark is a network analyzer program with the most complete a Graphical User Interface (GUI) display for now. Wireshark is not a tool for hacking, but because it can read everything, it is often used to snoop on sensitive data that is not encrypted. This function can actually secure the entity from hackers if it is properly used. This journal uses the literature study method in its research by examining the previous literature to describe in more detail about wiresharks in the perspective of accounting information technology system. Because the results show that the use of the network besides having advantages there are also disadvantages, especially in the security issue of an entity's important information, but this problem can be minimized by using wireshark, namely by early identification of data leaks.