Abstract
The information space is an effective hybrid warfare tool on the web. This study investigated the decision-making process in the antagonistic digital communication of internet services users. Implementation of the proposed methods in this study minimized the negative impact of the spread of destructive content and actions of unfair competitors in the ecosystem of social internet services. The innovativeness of the suggested methods is the ability to make real-time decisions in a situation of antagonistic behavior of online users. The authors presented a model to secure user data, contributing to sustainable communicative interaction for its managers and users. This article presented approaches to decision-making by online community administrators under conditions of antagonistic behavior of the online services, which ensures the increase of efficiency of online communication. Timely and effective decision-making eliminated the negative impact of conflicts between communities and the spread of threats to users' information security. The algorithm of decision-making by users of stable internet services is suggested. This article contains examples of using the examined Wald and Savage criteria for making optimal decisions, confirmed by many experiments. The developed methods are tested on the online community on the social network Facebook. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s13278-022-01021-4.