I wasn't saying either possibility was the cause of the Yahoo breach. Simply pointing out that there is always another way. The NSA's MUSCULAR program for exam

I wasn't saying either possibility was the cause of the Yahoo breach. Simply pointing out that there is always another way. The NSA's MUSCULAR program for example decoded proprietary secret squirrel cross datacenter replication protocols designed by both Google and Yahoo, so that isn't much of a safe guard against state level actors.