Anti-trafficking has been spreading in a novel way, with moral certitude (where human trafficking is deemed uniquely wrong, and this wrongness is taken as a founding principle for anti-trafficking action) accompanied by little or no accountability. This moral certitude drives anti-trafficking networks to spread across borders, just as it is assumed that trafficking will. The paper critiques this certitude and spread of anti-trafficking by developing ideas around borders, potential, and ethics. Massumi (2007) analyses the move to a potential politics, which prioritises what “[c]ould have, would have” happened and acts against this potential as if it is a ground for certitude. After Massumi, this paper argues that online anti-trafficking practice relies on potential borders: borders between legal and illegal, and the borders between states, are increasingly blurred by action against what might potentially be trafficking. Following Campbell (1993: 3-4) we critique the claims to “moral certitude” and principle in anti-trafficking and argue for deeper ethical engagement with the needs of others. Rather than the spread of anti-trafficking through potential borders, we argue that exploitation should be challenged through an ethical response to those marginalised by capitalism today. Against the unprincipled politics of the anti-trafficking industry, we advance a politics without principle that foregrounds our ethical obligation to respond to others.