The article deals with the role of optimal number of protected connection canals from the point of you of economics and their orifitability quantity. The quantity of the profitability norm which should be obeyed at directed calculation is considered from the attitude of a person making decisions considering required level of information security. Here is the example of optimal calculation from the point of you of maximal profitability of he numbers of protected canals of data transmission.
Keywords: information security, secure channel of communication, closed channel of data transfer, profitability norm, optimum number of channels, obtaining information