Computer Science Security

Introduction

Since antiquity, humans have sought security for themselves, reserving great importance for this need, an importance that is justified by the need to protect themselves against external factors.

With the appearance of computing and its full expansion, the problem of security is evident: it is a new multifaceted problem that affects all areas of activity, users and equipment involved in the field of computing.

Security includes numerous facets:

• – The first facet concerns the energetic aspect. It consists of providing and maintaining the necessary energy for the proper functioning of the computer system.
• – The second facet deals with the physical aspect. It consists of physically securing the location and material infrastructure of the computer system, such as the cable and wireless systems of communication, the intermediary equipment for interconnection, transmission and security (repeaters, hubs, switches, routers, firewalls, etc.), as well as terminal processing equipment for both workstations and servers. Physical security allows the computer system to be secured against natural factors, such as flooding and fires, and human factors, such as theft.
• – The third facet is an aspect specific to computer security, contrary to the first two which are applicable to any industrial field that requires energy and ownership of critical materials. The objective of this facet is to resolve specific security problems related to computer technology, in order to guarantee secure ...