This 2-day seminar, organized by the TNTD Action against Terrorism Unit of the OSCE Secretariat, will focus on several areas of criminal justice responses to terrorism, such as criminalization preparatory acts of terrorism, including terrorist financing, protection of participants of law enforcement investigations and judicial proceedings, issue of pre-trial detention of suspects, punishment, incarceration and reintegration of convicts, as well as the issues related to the legal framework for electronic surveillance and undercover investigations.