关键词：电子信息；信息安全；网络安全；远程信息处理系统
摘 要：Under telematic systems we usually understand the system consisting of many elements distributed in large territory where some of these elements are mobile elements. The behavior of the system consists of interaction among elements and we assume that these interactions have to be undisturbed - secure. Because we have seen some non-identical understanding in the scientific community, let us define the meaning of any possible misinterpreted term just for purpose of this chapter. Later on we will see important usage of these definitions.