Proposition of a method to aid Security Classification in Cybersecurity context

In a context of Cybersecurity and development of Cloud or Big Data, Data Security Classification is becoming these days a real issue in most organization. In this article we try to propose a method that could help the management of Data Classification. We will explain the issues behind Data Classification in terms of Security. We will show some constraints we can find behind the notion of Information. We propose a method compose of three main steps and we focus on the first one which is a risk assessment matrix. This academic work is supported by a large-scale pragmatic experimentation in a worldwide company.