Cyber Attacks Directed Information Systems (IS) and Maintenance of Cyber Security

Abstract: The concept of cyber security and cyber attacks have been playing a critical role in the achievement of both national security and corporate competitiveness as a result of the increase of worldwide rapid spread in the field of information and communication technologies, data storage and data communication. Hacker attacks have severely damaged sometimes computer users, sometimes companies and government institutions. These attacks have confronted us in the forms of ransomwares, phishings, DDOS attacks, mobile threats and etc. Economic losses resulting from cyber attacks in recent years have been threating corporations severely. It is mandatory for corporations any longer to protect information systems through cyber security, secure the data confidentiality, integrity and accessibility, detect cyber attacks in advance and take counter measures against these attacks. Within the scope of this study, Cyber Security Reports and Surveys prepared by various institutions in some countries are examined. As a result of this examination, cyber threats and practices, security risks and weaknesses are analyzed, the recommendations regarding compulsory measure and the security awareness are given in the article