The method, program and information processing system secures data, and particularly security sensitive words, characters or data objects in the data, in a computer system with multiple independent levels of security (MILS). Each level of MILS has a computer sub-network with networked workstations. The...http://www.google.com/patents/US7669051?utm_source=gb-gplus-sharePatent US7669051 - Data security system and method with multiple independent levels of security
Data security system and method with multiple independent levels of security