This article evaluates certain recent changes in counter-terror law and policy in response to rising threats to security in recent years, often associated with the activities of supporters of ISIS or similar groups, or suspected supporters. A range of security concerns and policy strands led to the introduction of a number of new counter-terror measures in the Counter-Terrorism and Security Act 2015. This article does not set out to provide a comprehensive examination of the Act's provisions, but covers its extension of coercive non-trial-based measures aimed at terrorist suspects generally, but particularly at persons who have gone abroad to support ISIS or may seek to do so: the introduction of Temporary Exclusion Orders, excluding persons suspected of travelling to Syria to fight with ISIS from the UK temporarily, travel restrictions, and the strengthening of TPIMs (a form of ‘light touch’ control order). This article considers, in the aftermath of the November 2015 Paris massacre, the roles to be played by the new and planned measures in terms of increasing security, and the extent to which their design has also been influenced by the ECHR, taking account of relevant jurisprudence under the Human Rights Act and at Strasbourg.