It's unlikely anyone would want to encrypt everything they save to hard drives or floppy disk, but in cases when particularly sensitive matters are involved, an encryption algorithm that only the author can employ is an attractive option. Without physical security all the virtual security in the world can become irrelevant. This seems obvious but often gets overlooked during network design and installation, with expensive retrofit repercussions. Command support is the bedrock of any military program. Like corporate CEOs, our commanders determine the relative priorities of everything that requires scarce time, money and manpower.
Every organization has to make the decision on how much security it can afford.
Perhaps we can adopt strong, dynamic passwords at no cost and accept any residual risk. On the other hand, for mission critical information, like deployment timetables or medical records, a million dollars may be a small price to pay for the protection they deserve. In all cases, we work closely with network managers and their leadership to make sure they have the security they need without overdoing it. Money, of course, isn't the only critical resource. Staffing decisions also play a key role.