There was evidence of the NSA intercepting international communications before Snowden, but for some reason that didn't seem to make much of a lasting impression: https://en.wikipedia.org/wiki/Room_641A
It's also significant to note that while the government is quite bad at keeping 'problematic' behavior secret, companies are much worse at it.
It's also significant to note that while the government is quite bad at keeping 'problematic' behavior secret, companies are much worse at it.