This study explores the main building blocks of participatory activism utilised by sympathisers of the Islamic State within their online media networks. The organisation has named this militant practice “media jihad” or militancy (munasara), which is built on the cultural patterns of traditional ground-based jihad. The practice involves transferring cultural values and war manoeuvres into the virtual ecosystem. The virtual tactics used by sympathisers are linked to the cultural norms of jihad, resulting in a combination of battlefield jihad values and digital resistance practices. The term “Jihacktivism” is introduced to describe this complex combinative Jihadist contention model promoted by the Islamic State. It is a digital resistance paradigm that decentralises the production and dissemination of the Islamic State’s propaganda and empowers sympathisers to contribute to the organisation’s communication of jihad. By doing so, sympathisers may foster a sense of solidarity and become more identified with the group’s cultural schemas and ideological beliefs.