Перегляд за автором "Ovcharenko, D. R."
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Публікація About the possibilities of the electric echo use for the technical information security tasks(ХНУРЕ, 2023) Ovcharenko, D. R.; Khizhnyak, P. P.Публікація An electrical echo using to enhance the security of two-factor authentication(ХНУРЕ, 2025) Ovcharenko, D. R.These theses discuss the existing vulnerability in the SS7 protocol, which threatens two-factor authentication of bank clients by phone. An attacker can surreptitiously enable call forwarding from the victim’s phone to their own, thus gaining access to the victim’s bank account. It is proposed to measure the electric echo time delay in order to detect call forwarding. Experimental data are provided, demonstrating the effectiveness of this method in combating fraudsters.Публікація Analysis of the practical measurement of electrical echo parameters in mobile communications(ХНУРЕ, 2024) Ovcharenko, D. R.The results of practical measurements of echo signal delays during calls in the networks of mobile operators in Ukraine are presented. It is shown that with the help of electrical echo, facts of call redirection to the network of another operator can be detected, since the echo delay increases. It has been established that the use of a roaming SIM card will not allow simulating a stay in another country if it is registered in the network of the national telecom operator. The use of IP telephony when calling to mobile networks is also clearly determined by the echo delay.Публікація Measuring signal for electric echo analysis for the technical information security tasks(ХНУРЕ, 2023) Ovcharenko, D. R.; Zakhanskaya, V. E.Публікація The electrical echo measurement under the echo cancellation activity(ХНУРЕ, 2024) Ovcharenko, D. R.This work is about to obtain an electrical echo signal for technical information security tasks in conditions when echo cancellers are active. Due to the fact that echoes are considered interference in telecommunications systems, special means, named echo cancellers, are used to suppress them. The echo cancel lersfeatures are considered, and ways to bypass them are shown. Experimental data confirming the effectiveness some of them are presented.Публікація The practical electrical echo measurement for the technical information security tasks(ХНУРЕ, 2023) Ovcharenko, D. R.; Solyanyk, I. A.