Information technologies have been developing nowadays at an amazing speed, affecting the functioning of organizations. Almost all of these organisations are involved in some way in sourcing activities, and each of them develops a sourcing relationship that suits its particular needs. In the article, different kinds of outsourcing models were discussed, which are applied in the contemporary management, with particular emphasis put on cloud computing. Cloud computing has become an omnipresent and an increasingly important technology and new risk areas have appeared. The main aim of this article was to present the most important risks related to the introduction of management models based on the most recent IT technologies, e.g. cloud computing, and emphasize the role of appropriate IT security management.