Secretary Hillary Clinton used several different servers and administrators of those servers during her four years at the State Department. She also used numerous mobile devices to send and to read email on that personal domain.

We're conducting an investigation to understand whether there was any coordination between the Russian efforts and anybody associated with the Trump campaign.

What we want to work with manufacturers on is to figure out how can we accommodate both interests in a sensible way? How can we optimize the privacy, security features of their devices and allow court orders to be complied with?

There are those who've been hacked by the Chinese and those who don't know they've been hacked by the Chinese.

I care a lot about privacy. I also care an awful lot about public safety. There continues to be a huge collision between those two things we care about.

She [Hillary Clinton] used her personal email extensively while outside the United States, including sending and receiving work-related emails in the territory of sophisticated adversaries.

Really bad people around the world, because of the genius of American innovation, use our products and infrastructure for their emails, for their communications.