Wyden has asked the government to warn Americans that the very tool millions use to protect their privacy may be used as a mass surveillance tool against them.

He says "Warn Americans how government are treating VPNs."

When Wyden asks pointed questions in public, it's usually because of something he can't say out loud. Remember his Senate hearing in 2013? Don't worry, we'll remind you.

So what does Wyden know? And should you still be using a VPN?