[generj]

They later responded. Quoting from Arstechnica's 5:11 ET update:

A spokeswoman for Microsoft, Kim Kurseman, e-mailed Ars this statement, and also declined further questions: “We have never engaged in the secret scanning of email traffic like what has been reported today about Yahoo.”

For its part, Google was the most unequivocal. Spokesman Aaron Stein e-mailed: "We've never received such a request, but if we did, our response would be simple: 'no way.'"

http://arstechnica.com/tech-policy/2016/10/fbi-demands-signa...

[CaptSpify]

Don't the NSL's typically have a section saying that they have to deny they ever received one?