I was waiting for someone to point out IDF (Unit 8200?) and NSA collaboration being responsible for this to come up. The only proof we have is a smile by a an Israeli Defense leader in response to a question asked on 60 minutes (or a similarly named show)

Also the author leave a few details out such as the intermitted activation ,for example it was only activated on day 7 and day 21. and other stuff like size of this.