Information technologies, ICT and Industry 4.0 are developing particularly fast in the fourth technological revolution. During the COVID-19 pandemic, there has been an increase in the scale of digitisation and internationalisation of remote communication processes and various aspects of economic activity. Digitisation of the economy is currently taking place simultaneously in many areas of economic processes and the functioning of many economic entities and public, financial and other institutions. Many companies, enterprises and public institutions that previously operated mostly or solely offline during the pandemic have switched to remote, electronic operation via the Internet. The development of electronic banking is also increasing, including internet and mobile banking. The share of electronic, cashless payments via the Internet and payments with electronic bank cards is increasing. In addition, in recent years, the range of applications of Data Science, Big Data, and Data Analytics technologies in economics, finance and organisation management, including enterprises, financial and public institutions, has been increasing. Therefore, the importance of implementing analytical instruments for advanced processing of large Data Science data sets in enterprises, financial and public institutions is also growing, including the construction of Big Data Analytics platforms to support organisation management processes in various aspects of operations, including improvement relationship with customers. The scale of cybercrime has also increased during the pandemic, as has the importance of improving cybersecurity techniques and instruments.