This paper presents a CORBA Security discretionary prototype developed in the context of JaCoWeb Security Project. JaCoWeb Security Project is developing an authorization scheme for large-scale networks that is based on structures and concepts introduced in Web, Java and CORBA for security. This scheme is being developed in order to deal with management of security policies in large-scale networks simplifying authorization policy implementation. These policies are based on well-known literature security models as the Access Matrix Model and on the discretionary policy objects of CORBA Security Specification. Keywords