Bill Sweetman wrote a good article on the new Air Force bomber program titled USAF Bomber Gets Tight Numbers. I found the following paragraph interesting:
One factor will drive up the cost of the bomber’s R&D: its status as a SAP [Special Access Program]. SAP status — whether the program is an acknowledged SAP, as the bomber is likely to be, or completely black — incurs large costs. All personnel have to be vetted before they are read into the program. Information within the program is compartmentalized, reducing efficiency. SAP status has been estimated to add 20% to a program’s cost.
Security for SAP isn't cheap! Sweetman elaborates:
The most likely reason for this measure is the sensitivity of ELO [extreme low-observable] technology, combined with the fact that the U.S. is the target of what may be the most extensive and successful espionage program in history — China’s Advanced Persistent Threat.
How much is the new bomber supposed to cost?
The magic numbers for the bomber are a fleet size of 80-100 and a flyaway cost of $500 million.
So, that's $50 billion, assuming 100 aircraft at $500 million each? Let's assume that cost includes SAP fees. If SAP protection adds 20%, that means without SAP the cost would be roughly $42 billion.
That means, for this program alone, the APT costs the US taxpayer $8 billion.
I find this sort of article really interesting because it demonstrates a real-world cost due to ongoing computer intrusions perpetrated by the APT.