On the 21st of May Professor Mike Schmitt delivered the second of three half-day webinars on international cyber law for Australian government attorneys and other officials dealing with cyber matters. The session focused on the legal attribution of hostile cyber operations and the response options available to victim states under international law. Joining Professor Schmitt were Liis Vihul, CEO of Cyber Law International, and Professor Marko Milanovic of the University of Nottingham. The final session will be held in June and will deal with issues involving the use of force and international humanitarian law. The webinars are organised by the Australian Department of Foreign Affairs and Trade and offered throughout the Australian government.