The previous chapter makes it clear that the Internet and communications technology have become important frontiers in the struggle against gender-based violence. Discussing, in particular, the everyday lived experience of violence against women online, it illustrated the extent to which online gender-based violence has been normalized as well as the direct linkages between online violence, offline harms, and intertwined structures of oppression based on patriarchy, Global North–South divides, and other social hierarchies. While Chapter 3 offered insight primarily into the experiences of domestic and interpersonal violence facilitated through online platforms, it left unaddressed the issue of how gender-based violence can be deployed by extremists using technology to further their own ends. The present chapter explores how online extremist violence both deploys gender discourse and uses gendered labour to further its end. This analysis looks primarily at the role of social media, but also addresses the role of messaging apps, decentralized platforms, and other related technologies.