I'm sure that Cisco doesn't really think this would stop a targeted attack (as others have said, they've doubtless got insiders who can point these things out),

I'm sure that Cisco doesn't really think this would stop a targeted attack (as others have said, they've doubtless got insiders who can point these things out), but then they've got to try and do something to reduce the inevitable consequence of the Snowden Disclosures, which is that any organisation who has reasons to not want "Five Eyes" agencies to have easy access to their systems will have a strong incentive not to use hardware and software which could be intercepted and backdoored in this way...