"The attacks in Paris demonstrated the scale of the threat that we face and the need to have robust powers through our intelligence and security agencies in order to keep our people safe," Cameron said.
"Are we going to allow a means of communications which it simply isn't possible to read?" Cameron said Monday while campaigning, in reference to apps such as WhatsApp, Snapchat, and other encrypted services. "My answer to that question is: 'No, we must not.' The first duty of any government is to keep our country and our people safe."
"Let me stress again, this cannot happen unless the home secretary personally signs a warrant. We have a better system for safeguarding this very intrusive power than probably any other country that I can think of," Cameron added.
"We are concerned at the increasingly frequent use of the Internet to fuel hatred and violence and signal our determination to ensure that the Internet is not abused to this end," European Union politicians said in a joint statement.