Community Action for Preventing Extremism (CAPE) is Australia’s only not-for-profit counter-extremism project focused specifically on preventing a growth in right-wing extremism. By disseminating counter-narratives to extremism through the exitwhitepower.com website and directly engaging with individuals at-risk via social media, CAPE seeks to sow a seed of doubt that will reduce individual’s vulnerability to involvement in the far-right. This paper will outline CAPE’s practitioner experience in developing online interventions to challenge far-right narratives and the advantages of using this method of engagement. The paper will also outline distinctions between traditional white supremacist far-right groups and the increasingly active anti-Muslim groups, which create challenges for CAPE’s work in countering far-right online activity.