Radicals are not going to disappear. They're going to go underground. They're going to be hardened. And they're not going to be exposed to contrary ideas made by educated people who can make real, convincing, and persuasive arguments to deradicalise these people.

I considered bringing forward information about these surveillance programs prior to the election, but I held off because I believed that [Barack] Obama was genuine when he said he was going to change things. I wanted to give the democratic process time to work.

On the other hand, the Internet is there to fill needs that people have for information and socialization. We get this sort of identification thing going on nowadays because it's a very fractious time. We live in a time of troubles.

If the United States is promoting the development of exploits, of vulnerabilities, of insecurity in this critical infrastructure, and we're not fixing it when we find it, instead we put it on the shelf so we can use it the next time we want to launch an attack against some foreign country. We're leaving ourselves at risk.

The US government still has no idea what documents I have because encryption works

We are all today being monitored in advance and in criminal suspicion. And I think that's terrifying, and deeply illiberal as concept. And that's something that we should reject.

I believe that when [senator Ron] Wyden and [senator Mark] Udall asked about the scale of this, they [the NSA] said it did not have the tools to provide an answer. We do have the tools and I have maps showing where people have been scrutinised most. We collect more digital communications from America than we do from the Russians.