Abstract
This paper analyzes the potential threats and risks to information security associated with the use of messengers. A comprehensive approach is proposed for assessing messenger security using the IMECA (Intrusion Modes and Effects Criticality Analysis) method. This method enables a well-founded choice of a messenger for secure communication based on a set of supported features that can enhance security and considering personal preferences. The methodology involves expert evaluations to determine the criticality of threats, taking into account their likelihood and the severity of their consequences. Based on the analysis, appropriate countermeasures in the form of messenger features are justified to minimize risks and enhance user security. The practical contribution of the work and the significance of the results obtained for improving cybersecurity are determined.
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