Review in Design and Engineering of Computer and Digital Devices

The design and engineering of computer equipment and means of protecting it from the interest of contemporary researchers in recent decades, as computers are considered one of the main tools that allow communication between people regardless of their location, as the computer has become an effective communication tool that brings together members of the same family, relatives and friends, and it also allows conducting job interviews by default, this is done by connecting the computer to the internet, then using some programs and tools for making communications over the internet, whether visual or even audio. One of the uses of the term computer security refers to the technology used to implement a secure operating system. Much of this technology is based on science that has progressed since the 1980s, and is used to produce what would be some of the most impenetrable operating systems ever before. Although still in effect, the technology is of limited use today, primarily because it imposes some changes to the management of the system and also because it is not widely understood. Such very robust and secure operational systems are based on the technological operating system channel that can ensure that some security policies are absolutely enforced in the operating environment. An example of this cyber security policy is mandatory access control