A system and method are disclosed for analyzing security risks in a computer network. A method of making such amino-mercapto functional organopolysiloxanes is by reacting a silanol-functional polysiloxane, an amino functional alkoxy silane, and a mercapto functional alkoxy silane, via a condensation reaction. Four bits that define a SAM-3 task priority are mapped to the three user priority bits within a standard 802. When the programmable logic deviceunit is used for an encryptingdecrypting circuit, an encryptingdecrypting system that can flexibly change an algorithm at high speed can be accomplished. According to the invention, the filling element is movable in the longitudinal direction of the container.