Cyber security during the COVID-19 pandemic

COVID-19 has changed the way cyber security is viewed by corporations in the global community. Not only did COVID-19 make many individuals work at home, sometimes on their own computers, and using their own routers, virus protection, etc., the lack of cyber security protection that individuals can provide against hacker attacks, especially for highly sensitive information can be limited. This paper introduces major technologies (such as 5G, blockchain, telemedicine, and big data) in fighting COVID-19, cyber-attacks, and cyber risks (due to people's actions as well as systems and technology failures) during the COVID-19 pandemic, cyber security for telework, cyber security of Internet of Things (IoT) and telemedicine, and cyber security based on blockchain technology. Blockchain helps mitigate the risks of COVID-19 and improves the privacy and security of health systems. © 2021 the Author(s).