EVA, AN OUTSIDER VULNERABILITY ASSESSMENT COMPUTER TOOL

To assess facility security systems, you need powerfull tools to help you. It is the only way to have a systematic approach, to be able to study all your potential target and to allow you to analyse your situation in front of differents threats. So, to help security managers, a new outsider vulnerability assessment model E.V.A. has been developped at the D.C.S. (Direction Centrale de la Securite) of the C.E.A. (Commissariat a 1'Energie Atomique). E.V.A. (Etude de la Vulnerabilite des Acces) is a computer tool running on IBM PC family. E.V.A. allows the user to define a description of your facility, to model your security system. Then E.V.A. analyses the situation and allows the user to visualize the paths going from the outside to a special target which are the more vulnerable. Because we think that, all the situations we have to study are different from one to the other, E.V.A. is a simulation tool : there are no database, no spectrum threats. All the data given to E.V.A. have to be chosen by the analist who can try different games of data to simulate different situations. E.V.A., which is very simple to use, can be suitable to all cases you want to study (a big nuclear plan, a research laboratory, a stock of materials or just a li,ttle facility) and for all kind of threats (terrorist, criminal, anti-nuclear extremist or a robber).