We never got the full picture on PRISM. We do know that at least a part of the program was a direct result of tapping fiber much of the program also went redac

We never got the full picture on PRISM. We do know that at least a part of the program was a direct result of tapping fiber much of the program also went redacted. I've posted this before but during 2010 the main data center I had access to was closed one evening and the next morning we had a mobile server rack tied back to main routing gear via fiber which was in a mobile rack, blacked out and fully tamper taped. We knew a three letter agency was installing it and all floor access was revoked for that evening as well as being in the building. This was not off long haul fiber but was off of main routing infrastructure. I don't believe PRISM was purely fiber taps and that these programs had deeper hooks. Unfortunately I don't have any evidence beyond the assumption based on the facts I had been given and what I physically saw. I've used and installed a lot of long haul gear and have seen and installed many fiber taps in my day, this implementation was hardly passive in nature. But, that's just first hand knowledge of a random patron of the Internet.