Acts of terrorism represent a serious threat to the lives and safety of people, and a profound security challenge for states. At the same time, counter-terrorism legislation, policies and other measures can entail, directly or indirectly, serious limitations to fundamental rights, and can adversely affect individuals, groups and society as a whole. This summary presents FRA’s main findings from its report on Directive (EU) 2017/541 on combating terrorism, the main criminal law instrument at EU level in the field of counter-terrorism.