International Journal of Scientific Research and Management (IJSRM) ||Volume||09||Issue||12||Pages||EC-2021-669-710||2021|| Website: www.ijsrm.in ISSN (e): 2321-3418 DOI: 10.18535/ijsrm/v9i12.ec04 Dr.Yusuf Perwej, IJSRM Volume 09 Issue 12 December 2021 [www.ijsrm.in] EC-2021-669 A Systematic Literature Review on the Cyber Security 1 Dr.Yusuf Perwej, 2 Prof. (Dr.) Syed Qamar Abbas, 3 Jai Pratap Dixit, 4 Dr. Nikhat Akhtar, 5 Anurag Kumar Jaiswal 1 Professor, Department of Computer Science & Engineering, Ambalika Institute of Management and Technology, Lucknow, India 2 Director General, Ambalika Institute of Management & Technology, Lucknow, India 3 HOD (CSE, IT), Ambalika Institute of Management & Technology, Lucknow, India 4 Associate Professor, Department of Computer Science & Engineering, Ambalika Institute of Management & Technology, Lucknow, India 5 Assistant Professor, Department of Computer Science & Engineering, Ambalika Institute of Management & Technology, Lucknow, India Abstract In recent years, the Internet has become an integral element of people's everyday lifestyles all across the world. Online criminality, on the other hand, has risen in tandem with the growth of Internet activity. Cyber security has advanced greatly in recent years in order to keep up with the rapid changes that occur in cyberspace. Cyber security refers to the methods that a country or organization can use to safeguard its products and information in cyberspace. Two decades ago, the term "cyber security" was barely recognized by the general public. Cyber security isn't just a problem that affects individuals but it also applies to an organization or a government. Everything has recently been digitized, with cybernetics employing a variety of technologies such as cloud computing, smart phones, and Internet of Things techniques, among others. Cyber-attacks are raising concerns about privacy, security, and financial compensation. Cyber security is a set of technologies, processes, and practices aimed at preventing attacks, damage, and illegal access to networks, computers, programmes, and data. The primary goal of this article is to conduct a thorough examination of cyber security kinds, why cyber security is important, cyber security framework, cyber security tools, and cyber security difficulties. Cyber security safeguards the data and integrity of computing assets that are part of or connected to an organization's network, with the goal of defending such assets from all threat actors throughout the life cycle of a cyber-attack. Keywords: Cyber Security, Cyber Attacks, Phishing, Cyber Crime, Network Security, Internet of Things (IoT) Security, Cyber Security Frameworks, Malware. I. Introduction The Internet is one of the most important inventions of the twenty-first century that has had a significant impact on our lives [1]. Today, the internet has broken down all barriers and transformed the way we communicate, play games, work, shop, make friends, listen to music, watch movies, order meals, pay bills, and greet pals on their birthdays and anniversaries. Our world is becoming increasingly networked, with digitized information underpinning key services and infrastructures [2]. Nation states, organizations, and end users are all concerned about threats to the confidentiality, integrity, and availability of digitized information [3]. In a digital world that is progressively pervading every area of our everyday lives, both public and private, security is a must. The world will fall apart if there is no security. Attacks like WannaCry have wreaked havoc on unprepared citizens, businesses, and organizations, putting their operations in jeopardy [4]. In the sphere of information technology, cyber security plays a critical role. Over the previous few decades, cyber security has progressed [5]. When we come across a fraud, cyber security is the first thing that comes to mind. Protecting our personal data on the internet has become a major concern. The number of [6] connected device has expanded at a rapid rate in recent years, surpassing 50 billion by 2020. The