Karpachev I. Information technology to ensure functional safety of mobile devices

The dissertation for the scientific degree of the candidate of technical sciences (PhD) in specialty 05.13.06 – information technologies. – National University “Chernihiv Polytechnica”, Chernihiv, 2021. The dissertation is devoted to the identification of potentially dangerous applications to ensure the functional safety of mobile devices running on Android operation systems. For the first time, the classification of types of malicious applications is proposed. It is based on the grouping of permissions to use API functions by the degree of potential impact, which allows to assess the applications by the level of danger to the user for making decision to use it. The model of access permissions for interaction OS Android with applications is developed, which establishes the relationship between groups, permissions and API functions. It allows to use function aliases to speed up the identification of applications. The method of dynamic detection of potentially dangerous applications is improved due to the use of application functional chain signatures, which are built and compared during the execution of applications that allows to assess the risk of identification. The information technology for ensuring the functional safety of mobile devices has been further developed, that allows to control the processes of using Android applications by dynamic analysis the detected attack vector. The developed information technology has a practical embodiment in the form of a software package, which includes two software tools that work in cloud environment and implemented by using C #, Kotlin and JavaScript. Key words: mobile device, functional safety, API function, application functional chain signature.