The idea
about this is that this happens by complex planned attacks by groups with
terroristic, extremistic or fundamentalistic motives. However since the
attention of intelligence agencies has been intensified it is assumable that
future terror actions will be different in terms of preparation. The focus of
these groups will possibly transfer to more easy to plan actions with
relatively simple means like the use of different types of small arms and/or
explosives but still with a deep social impact.