Your big picture viewpoint is wise, MA.
The 2005 Huawei hack of Nortel that eventually bankrupted that firm remains a potential grey swan hanging over any firm in telecom equipment. It is a new world and security flaws, while less prominent in the news for major corporations, will always have the potential for corruption (selling portals of entry to the highest bidder).
AFTER the BK, Huawei knew from the hacked 800 files exactly who were the top 20, key, bright minds at Nortel ... and went after them with suitcases of money. They joined Huawei to help move beyond optical switching and into future innovations. Money talks ... will always talk. "Portals for sale" will always remain a security hole. All the best.