The just revealed Hacking Team RCS systems backdoor (for them and presumably for their state friends) was the very reason of existence of the first such systems from the early 80-90’s (!!), created by former NSA staff, and then taken over by former (?) Mossad senior agents, and sold to tens of governments worldwide.

Pushed around “presumably” with the key goal of giving Israeli intelligence full info on what other intelligence were up to. US made an illegal copy for itself and pushed that one around to other governments …

Here is the Wikipedia file a long detailed story of it, and Here excerpts from a relatively authoritative book on the history of Mossad “Gideon’s Spies” which I finished reading last Christmas:
https://en.wikipedia.org/wiki/Inslaw
http://cryptome.info/promis-mossad.htm