Description: Social networking services have become an effective means of mass communication of members of virtual communities named actors. However, the benefits of social networking services are used by intruders to implement threats to the state's information security directed against people, society, and the state. It’s important to create an effective system for ensuring information security of the state in social networking services to identify, assess and counteract complex threats. The article proposes a prototype of the program complex of the decision support system for revealing signs of threats to the state's information security in social networking services and assessing their level. The developed prototype of the software complex is an integral part of the state information security system and automates the processes of early detection of threats in social networking services. The basis of the decision-making model is modern approaches to information retrieval, intellectual content analysis and synergistic management of actors interaction to achieve the desired state of information security of virtual communities. The obtained research results prove the adequacy of the proposed methods, models and technological solutions. The software package layout can be used to create an effective software product and to take into account the requirements of users–experts, reducing risks in the development of the final software product.
Keywords: social networking service, decision support system, threat, information security of the state, software prototype, actor, content, synergetic control