Historically the terrorist threats were mainly constituted of physical actions. They took different forms which evolved during the twentieth century in a continuous way with increasing consequences and effects. The eleventh September 2001 attacks were a real strategic surprise but only involving "classical" operational means. Then the cyber threats were considered and they introduced a new dimension of complexity and capacities for the terrorists. Since 2001 everything can be considered as possible, with the cyber threats this means that attacks can be controlled from far away and the systemic dimension of cyber also changes the nature of the threats from a physically limited act to a systemic act which can reach simultaneously every point connected with the system. Recently, a new dimension appeared linked to the social networks and to the flow of news which are not checked before being published by medias, both of them opening the door to the proliferation of fake news. This new dimension has already been used in France by the "Yellow Jackets" in order to win the battle for public opinion. The hybrid threat is in fact nothing more than a cocktail of physical event potentially combined with a cyber-attack and a fake news flow on social networks based on a deformed reality. If the previous situations were handled by security and cyber-security specialists using professional tools, this new type of threat requires a global involvement of the whole company and even of its partners and customers. This means that new skills and a globalizing approach must be developed based on human sciences more than on tools. This is the condition to be able to set up the barriers to prevent, deter, identify, delay, react and recover to and from these new kind of actions.