I admit that's something I said without thorough research. It's just something that pops up in discussions about industrial espionage, or about the DGSE, or about the french military-industrial complex.
So Germany was being spied on while developing a system to spy on others, preferring to introduce a US Trojan horse in the EU through it rather than develop it in the European structure because it is French-dominated...
A quick search gives me this article as evidence: https://www.france24.com/en/20110104-france-industrial-espio...
But I admit I don't have strong reference to back my statement up.