The article gives general characterisation of the ways in which these organizations use modern communication technologies. Currently, every major terrorist organisation maintain robust media wings, which focus on producing videos, publishing magazines and sharing them with the public via the Web. The empirical system of reference is based on the activity of al-Qaeda, her franchise AQAP (al-Qaeda in the Arabian Peninsula) and ISIS (the so-called Islamic State). While analysing the media of terrorist organisations, the Lasswell model was applied. This formula is a standard research procedure used for investigating acts of communication by answering the questions: who, says what, in which channel, to whom, with what effect?. The author also present typology of videos produced by jihadist organisations, characterised the most important and active media actions of terrorist organisations and a typology of recipients of such messages. The article presents a number of reasons why the Internet has become such an important tool for terrorists.

The report presents theoretical framework of relationships between terrorist organisations and media, and it describes them as an interactive modelling of a message. It introduces the concept of mediatisation of terrorism, and it offers a definition of this process. Moreover, the report develops it with six theoretical hypotheses related to: influence of media on selection of terrorists’ targets, adaptation of an act of terror to the ‘logic of media communication’, personalisation of terrorism and celebritisation of terrorists, creation of biased and oversimplified stereotypes, transformation of terrorist objectives into catch-phrases, as well as a role of political violence in agenda-setting of main news broadcasts. The presented concept will be verified in the ongoing comprehensive, quantitative-and-qualitative study on mediatisation of terrorism in American television, that will investigate the process between September 11, 2001 and the Boston Marathon Bombing in 2013.