Advanced and sophisticated cyber-attacks pose a serious risk to economic and national security. The solutions for cyber security problems necessitate initiatives from all legal, institutional, scientific and technical domains, and the cooperation of governments, universities, industry and civil societies. The global nature of the problem also puts a special emphasis on international cooperation. Therefore, countries need to develop strategies on both national and international scales in a holistic approach. Today, most strategies developed by countries share the holistic, integrated, comprehensive approach supported by strong leadership, enhanced governmental co-ordination at policy and operational levels, reinforced public-private co-operation, and improved international cooperation. Cyber security strategies generally include action plans. Since Turkey has a critical and important geopolitical position due to its location in the Middle East; cyber security has an immanent importance to our country. Studies in this scope resulted in the June 2013 National Cyber Security Strategy document and 2013-2014 Action Plan. In this strategy document, cyber security risks and measures, 7 major topics, 29 key actions and 30 governmental organizations responsible of these actions are identified. In the 2013-2014 Action Plan, 29 actions in the scope of the major topics, sub-actions and organizations responsible of these actions are identified. According to these documents, cyber security activities in Turkey include government, Turkish Armed Forces, universities, industry and non-governmental organizations (NGOs). Studies for legal regulations are also in progress. There have been various laws, draft laws, and regulations in cyber security. Cyber Security activities require national cooperation of governmental organizations, universities, industry and non-governmental organizations. In this paper, we will first briefly present the general headlines and commonalities of national strategies of various countries. Then we will chronologically summarize the cyber security studies in Turkey, and focus on the National Cyber Security Strategy and Action Plan, stakeholders and their studies, legal regulations, awareness and educational studies, and national and international collaborations. Lastly, we will further elucidate a brief evaluation of cyber security studies in Turkey.