Mr Cameron has previously said in relation to cyber attacks that there should be no "means of communication" which "we cannot read".
It sounds like Mr Cameron wants microphones in every person's residence.
People who feel with absolute certainty that someone else is always the problem will always try to grab more power for themselves, and because of that, they can't be trusted with the ability to grab power, even though their current goals in using that power are ostensibly laudatory. They can't be trusted with power, because they will never consider any part of any of their own goals as being suspect. Citizens don't benefit when people who can't cope with compromising and feeling frustrated have a career in politics or public service.