Supposedly Mossad just built up factories also building non-exploding devices, and just included the extras on specific orders - so I guess they checked for each order if the guy ordering had “Hesbollah head of sourcing” in his linkedin profile, or something like that.
Have been using it since late 90s, stopped using it with the shutdown of SixXs as there still were no viable native options in pretty all my infra locations. Recently started using it again as I finally have an ISP providing proper v6.