Agreed, the rogue suicide in the wild is a problem.

and...with theguardian.com currently:

Breaking news: US orders non-essential staff to leave consulate in Lahore, Pakistan, citing terrorist threat. More details to follow ...

you suppose whatever intercepted intel causing all these embassy closures are `tainted' with `barium' so the threat is scanning NSA's global surveillance to see what activates a hwall alert and what does not? Eg, peaking traffic volume, how to do this with a machine generated sustained random crypto-noise spike?