With the development of internet usage, more and more companies are opening their information system to their partners or suppliers, it is essential to know the company resources to protect and control the control access and rights of users of the information system. It is the same in the open access business on the internet.
Threat represents the type of action that could undermine the absolute, while vulnerability is the level of exposure to the threat in a particular context. Finally measure against is the set of actions implemented in prevention of the threat.
The cons-measures to implement not only technical solutions but also measures of awareness and training for users, and a set of clearly defined rules.
In order to secure a system, it is necessary to identify potential threats and therefore to know and plan how to make the enemy. The purpose of this document is to provide an overview and possible motivations of hackers, categorize them, and finally give an idea of how they perform to better understand how it is possible to reduce the risk of intrusions.