There could be a contractual understanding ( of none disclosure ) between an agency and Nagra that you don't know anything about. That's my theory.
Yes OK I understand that point. However they give this information to dealers (some of whom appear not to be aware of the corporate NDA's with clients, if they exist).
My point is that the idea that the public seeing this device endangers security staff is simply not logical, if they want to be covert then they will use a truly covert recorder. This item (with it's wires and mics) seen by any spied-upon party will immediately be recognised as surveillance equipment. Images of it are also available from Nagra in the public domain.
That Nagra put the information on the web at all, is testament to the fact that they are not serious about security/secrecy/confidentiality. It's sitting in a password protected folder, not very secure. I have worked in R&D for two multinationals, and we never had anything truly confidential on the web. If lives were at stake it definitely would not be.
BTW: If this were confidential information about a car on an autoblog who would care? I don't get all the hand-wringing I have seen on this forum about this. Companies blow CDA's through error all the time, big deal.
Yes if it's confidential it shouldn't stay up here, I have no problem with that.
I think the fact that Google Earth is looking at your back yard and Streetview looking at your front door is a far biger problem to 'security'.
BTW: I just searched for 'Nagra CBR' in google, 5th link down (in Hebrew), and bingo...Israeli company...showing lots of pics from the manual/brochure, and details that Google Translate show to be operational specs, so how 'secure' is this info?
http://www.google.com.au/search?q=nagra+cbr&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-GBdigifish