Information security in today's world is a key factor in the success of business organizations. For information, it is very important to know how to transfer it from point A to point B in a certain way, along with a number of other conditions that are described about the type of information. In the military, information is classified according to security levels from top secret to public information. Any classified information must be transmitted in a secure manner. Cybersecurity is just a subset of information security that has become the 4th dimension of warfare with the development of technology. Information security played a key role during the Second World War, where information was encrypted so that the foreign side could not use this information to create superiority. We have a not so long ago case in the Homeland War where, for example, certain key land forms were named by code names (eg Sava - snake). Also today we can see how large business organizations are trying to protect their information that competitors did not have access to this information because this information can be critical for their further work. Protecting such resources is the job of cyber staff who value three key principles, namely confidentiality, integrity and availability.