Terrorism, global pandemics, climate change, wars and all the major threats of our age have been targets of online extremism. The same social media occupying the heartland of our social world leaves us vulnerable to cybercrime, electoral fraud and the ‘fake news’ fuelling the rise of far-right violence and hate speech. In the face of widespread calls for action, governments struggle to reform legal and regulatory frameworks designed for an analogue age. And what of our rights as citizens?