The biggest concern is the disruption of the money accounting -- creating fake money that passes as genuine payments. This risk is met with a robust accounting control, but the lingering fear is that an enemy has discovered a way to compromise it, ready to unleash at a proper moment. Breakdown of the computerized record of funds and credit spells a total catastrophe on our civil order. Fire walls, access-control, and encryption of files at rest are the mainstay for file security, and state of the art symmetric ciphers are used for bank to bank transers.