مجله بین المللی نوآوری در علوم کامپیوتر و فناوری اطلاعات 3 4 Requirements of Secure Architecture for Computer Systems Requirements of Secure Architecture for Computer Systems 72 81 10.22051/jera.2021.31891.2698 FA Shima MA Student, Department of Computer Engineering, Faculty of Electrical and Computer Engineering, Islamic Azad University, North Tehran Branch, Tehran, Iran Dr. Department of Computer Engineering, Faculty of Engineering and Basic Sciences, Islamic Azad University, Zanjan Branch, Zanjan, Iran Expansion of information technology and the larger dependence of organizations’ operations on it have resulted in the increased security threats; hence, to maintain operations, protect assets and business continuity, cybersecurity is necessary and part of the inevitable costs of organizations. There are numerous approaches to protect cybersecurity. Preventive defense is one of the significant approaches in cybersecurity, protecting the information of the organization and as one of the important organization’s survival pillars. The present paper investigates and assesses a set of Reference Architectures [2] as well as commonly used models in cybersecurity, presenting a new and agile model according to the best practices of each model so that given the severity and extent of the current changes, it may rapidly respond to the organization’s security needs, including the NIST framework [1], cloud computing, cloud computing security, threats and threat solutions. Expansion of information technology and the larger dependence of organizations’ operations on it have resulted in the increased security threats; hence, to maintain operations, protect assets and business continuity, cybersecurity is necessary and part of the inevitable costs of organizations. There are numerous approaches to protect cybersecurity. Preventive defense is one of the significant approaches in cybersecurity, protecting the information of the organization and as one of the important organization’s survival pillars. The present paper investigates and assesses a set of Reference Architectures [2] as well as commonly used models in cybersecurity, presenting a new and agile model according to the best practices of each model so that given the severity and extent of the current changes, it may rapidly respond to the organization’s security needs, including the NIST framework [1], cloud computing, cloud computing security, threats and threat solutions. /downloadfilepdf/629476