The National Centre for Security in Control Systems for Critical Infrastructure (NCS3) is part of a program at the Swedish Contingencies Agency (MSB) for enhancing security in those systems that constitute critical infrastructure. The work that is conducted within NCS3 is regulated through assignments from MSB. In this report, the assignments that were agreed upon in 2017 are summarized. In 2017, 17 assignments were agreed upon and carried out during the period 2017-2018. These assignments were carried out at the Swedish Defence Research Agency (FOI), by the division of Defence Analysis and C4ISR respectively. The assignments included ten studies and five course offerings, as well as awareness increasing activities such as talks.