Selection of a most suitable cipher system among several such systems is an important problem of the customers which help to acquire a right cipher system for meeting the requirements of information security to safeguard the vital data. Any mistake in the selection of a right cipher system is very harmful as it may lead to compromise the security of vital information. In the paper, we propose a multi-criterion fuzzy soft decision making methodology to select one of the most suitable cipher system. Proposed methodology uses fuzzy soft set, fuzzy soft matrix, dominancy matrix and S-fuzzy set to compute score values and take a right decision. It exhibits out performance over existing methods as shown by explaining some examples. We apply proposed methodology in selecting a most suitable cipher system from a set of systems with respect to the choice of desired security attributes required by the customers.