The threat of biological and chemical weapons is one of the more threatening threats. This is a consequence of the fact that if used against unprotected population it will result in a very great number of casualties a mass effect. The possible use of such weapons by terrorists as well as lone actors is thus very worrying. However, fortunately enough, such a threat has not really been realized in the last decades. In very few cases in which such weapons/agents were used by terrorists the number of casualties was small. A mass effect has not happened. Such a scenario can still be considered a wild card. A wild card is an event with a small probability but a high impact. Technology might change this situation in the far future giving lone actors new potential means to terrorize society. Being a wild card such a possibility calls for necessary protection means and relevant defense response.