Terrorism, as a global negative threat, endangers not only the security of individual countries, but also of the international community. Still, individual countries and protected values (the life and health of people, assets, etc.) are predominantly affected by it. Terrorist threats pose special danger to critical infrastructure. The risk from endangering critical infrastructure is on the rise, considering “the domino effect” of endangering critical infrastructure. The domino effect does not only imply the negative consequences within the borders of a country, but it also has a wider influence (a regional and even international dimension). Of course, the entire critical infrastructure system is at risk from terrorist activities, in particular cyber terrorist offences, which can endanger the key infrastructure of the country, burden communication systems, and even cause serious consequences for the security system within the country. Bosnia and Herzegovina is not an exception. In that sense, the list of critical infrastructure sectors poses a potential target for terrorist attacks, but also for cyber terrorism. Thus, it is extremely important to identify the sectors of critical infrastructure, and create adequate measures for their protection. In that regard, the paper points to some key European standards for the protection of critical infrastructure, and concrete antiterrorist and counterterrorist activities for their protection.