Phi Beta Iota: Data Security is just beginning to emerge as a viable alternative to network security. We have a very long way to go in this area, and also in relationship and identity authentication and trust assurance. Having said that, the death of the closed network concept is inevitable. The US Government is broke, DoD is going to run out of money for Industrial Era waste, and the better concepts that are more agile (e.g. time-based risk management in context of multinational information-sharing and sense-making operations) will rise to the surface. The secret world will be the last to get it.
See Also:
Robert Garigue at Phi Beta Iota
Reference: Advanced Cyber-IO (First Cut)