Due to the impossibility of direct conflict between states, soft power is used more and more to achieve military and political goals. One of the components of soft power is information warfare, which has gained in importance and effectiveness with the development of information and communication technologies in recent times. The widespread availability of computers, the Internet, smartphones, search engines, and social media has transformed the ways in which people are informed and how they process reality. The aim of this paper is to get a picture of the attitudes and behaviours related to the security of information on the Internet and their influence on the behaviour of respondents, and the purpose of the paper is to draw conclusions from the obtained data. In the first part of the paper, the history of information warfare is briefly described and key terms such as information warfare are explained. In the second part of the paper, the research conducted using a survey questionnaire is presented. The results of this research are in line with previous findings from the literature. Respondents self-assessed their skills and caution in accessing information available on the Internet. Respondents have a conservative attitude towards freedoms and privacy in the event of a security threat.