Within the last 10 years, the internet has become the principal platform for the dissemination and mediation of the culture and ideology of jihadism. The exponential growth of jihadist fora, with their increasingly ‘high-end’ production values, sophisticated critiques of prevailing narratives and ostensive attempts at impartiality, do not occur in a vacuum. To a great extent they are reactive, their raison d’etre supplied by the mainstream media’s perceived collusion with governmental (mis)information, or at least its uncritical acceptance. The jihadist media are far from alone in these critiques and there has been a growing convergence of interests with other non-mainstream and media outlets which are also challenging conventional modes of mediation. This article seeks to explore the functions of the new jihadist media, the ways in which it is granted legitimacy, and the compelling issue of radicalizing efficacy and recruitment.