Information and communication technologies play a vital role in the lives of individuals, social groups or society as such. This fact is related not only to new devices but also to a further- and further-reaching software offer. Nowadays, e-services are offered not only by commercial entities (eg. e-banking or electronic trade platforms) but also by central administration (eg. mDokumenty personal documents available on electronic devices, Regionalny System Ostrzegania Regional Warning System or by self-governments (eg. the application BLISKO). Frequent use of these programmes requires providing data which, when improperly secured, may be taken advantage of by criminals. Users, both individual and institutional ones, should remain alert while availing themselves of information and communication technologies. That is why, diagnostic research with respect to estimating threats – also in the realm of internal security – resulting from technological development is so important. Underestimating dangers may result in risky behaviours. Negligence or simply not conducting this sort of explorations usually lead to misfired educational-informational actions or to the increase in the number of crimes. The present paper presents the results of the research conducted among the inhabitants of Kuyavian-Pomeranian voivodeship in the area of threats to internal security, with the threats being contingent upon the development of ICT.