This article is focused on the planning of security measures. In our research, we are focused on soft targets and their protection. In this article, we present one part of our work - the process of planning and security strategy. In the beginning, the definitions of the soft targets and the cultural events are. Then we describe our proposal for schedule steps and security documents for effective security measures, generally for effective security and protection of people. The last part is about security strategy. We need to understand the possibilities of different strategies, their advantages and disadvantages.