Abstract: “Cloud computing is a modern trend in information technologies. Implementation of the cloud is associated with data security. Data security includes phishing, provider personnel with privileged access, data origin and lineage. Another security aspect is determination of data categorization. In this article we point to two ways for data categorization. The aim of this paper is to determine the safety aspects based on the special security points. We set user login, encryption and data security, risks and data integrity as the main aspects. These aspects we summarized in nondeterministic finite automaton. We determined a new methodology of security using automaton.”

Keywords: cloud computing, data security, data categorization, storage, data integrity