Lysenko S. Methodological basis and information technology for computer systems resilience under the cyberthreats

Thesis for a degree of doctor of technical science, specialty 05.13.06 – Information Technologies (12 – Information Technologies). – Ukrainian Academy of Printing of Ministry for Education and Science of Ukraine, Lviv, 2020. Today, cybercriminals are finding new ways to profit from businesses that are subject to extortion and a profitable source of income for organized crime groups through private information stored and processed by these institutions. Various types of cyberthreats are a powerful tool used by cybercriminals to commit harmful acts. Cybercriminals are developing new ways to avoid modern methods of detecting attacks, so existing approaches are unable to counter the increasing threat of attacks. The effects of cyberattacks are becoming more dangerous and devastating. The described situation intensifies the development of new approaches that can detect, prevent and mitigate cyber-attacks. It is very important to ensure stable operation of the computer system under attacks. One way to solve this is to build resilient systems that are able to quickly recover and continue to function in the context of attacks. In order to ensure the resilience of the computer system under attacks, it is necessary to create models, methods and information technologies that would give such systems the ability to anticipate, resist, and have the ability to recover from attacks. Keywords: resistance, cyber threat, cyberattack, malware, computer system, information technology, proactive detection.