This report contains findings from the Cyberterrorism Project’s symposium on terrorists’ use of the Internet. The event was hosted by Swansea University, UK, on 5- 6 June 2014. 43 delegates attended the symposium, including researchers from a number of UK universities, as well as institutions in the Republic of Ireland, France, the Netherlands, Norway, Turkey, Canada and Australia. Other attendees included representatives from the Home Office, South Wales Police and the Scottish Organised Crime and Counterterrorism Police Unit. This report provides summaries of each of the papers presented at the symposium, drawing out the key themes which emerged.