IJCSNS International Journal of Computer Science and Network Security, VOL.21 No.10, October 2021 302 Manuscript received October 5, 2021 Manuscript revised October 20, 2021 https://doi.org/10.22937/IJCSNS.2021.21.10.43 Management of Attracting Investment Resources of Enterprises to Ensure Their Economic Security in Circular Economy Anna Pohrebniak 1 , Olena Arefieva 2 , Kateryna Boiarynova 1 , Serhii Arefiev 1 , Volodymyr Davydenko 2 1 National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine 2 National Aviation University, Kyiv, Ukraine Abstract The article substantiates the principles of managing the attraction of investment resources of enterprises to ensure their economic security in circular economy. It is proved that increasing the efficiency of investment resources management of the enterprise makes it possible to ensure their economic security in a competitive environment by expanding, upgrading, innovative re-equipment of production facilities, expansion or diversification of production. Management of investment resources in the enterprise provides an opportunity to justify the balance and the possibility of attracting endogenous or exogenous investment resources while ensuring economic security in circular economy. Endogenous sources of investment resources include endogenous investments of internal and external origin. Since their own investment resources often cannot fully meet the investment needs of enterprises, there is a need to attract investment resources from exogenous sources. Investment resources of exogenous sources are divided into attracted and budget allocations. The advantages and disadvantages of attracting endogenous and exogenous investment resources are highlighted. The stages of management of investment resources of the enterprise for investments of endogenous and exogenous origin are substantiated. Key words: investment resources; circular economy; economic security; competitiveness of enterprises. 1. Introduction Ensuring the economic security of enterprises in today's competitive environment, accompanied by threats and risks, including those caused by global trends in society, such as a pandemic, increase scientific interest in managing the attraction of investment resources. For many centuries, the management of investment processes has been a topical issue for enterprises, various fields of activity, regions and states in general. This is due to limited financial resources, unforeseen risks of the financial sector and the activities of economic entities, etc. Inflationary processes, limited opportunities for self- financing of economic entities require the search for new approaches to managing the attraction of investment resources of enterprises to ensure their economic security in a competitive environment. Investment process management has a positive impact on the economic growth of investors. However, it is a prerequisite that the increase in investment from an entity of any level must be sufficient to offset inflation losses and compensate the investor for the risks of the investment. Improving the efficiency of management of investment resources of the enterprise makes it possible to ensure their economic security in a competitive environment through expansion, renewal, innovative re-equipment of production facilities, expansion or diversification of production. In turn, this contributes to increasing the profitability of enterprises, strengthening its competitive position in the market, ensuring the greening of production and solving environmental problems in accordance with the principles of the circular economy, social infrastructure development and economic growth in general. The purpose of this study is to substantiate the principles of managing of attracting investment resources in the enterprise to ensure economic security in competitive environment. 2. Literature review The issue of management processes of attracting investment resources of enterprises in circular economy in order to ensure their economic security is extremely relevant and timely. Significant attention has been paid to these issues in the research of leading scientists, including: Appiah M.K. (2019) [1]; Balatskyi I. (2021) [2]; Boichenko S. (2014) [3]; Chowdhury R.B. (2021) [4]; Derhaliuk M. (2021) [5]; Ivanenko T. (2018) [6]; Karpenko, O. (2021) [7]; Khanin S. (2021) [8]; Kong Q. (2021) [9]; Kovalenko N. (2021) [10]; Lejda K. (2017) [11]; Li X. (2021) [12]; Londoño N.A.C. (2021) [13]; Mishchuk I. (2021) [14]; Nikolova L.V. (2020) [15]; Papageorgiou A. (2021) [16]; Popelo O. (2021) [17]; Roiter L.M. (2021) [18]; Samiilenko H. (2021) [19]; Sananda I. (2021) [20]; Sharma H.B. (2021) [21]; Shevchuk N. (2021) [22]; Shkilniuk I. (2008) [23]; Shtangret A. (2021) [24]; Tkachenko T. (2021) [25]; Tulchynska S. (2021) [26]; Vovk O. (2021) [27]; Wang D. (2020) [28]; Wang Y. (2020) [29]; Yang J. (2017) [30];