What we're going to get as this next generation grows up is more hacking skills and this is spreading geographically also - Africa is about to come on the scene, South and Central America are going to be major sources of hackers. These people have got to be engaged with.

I think that we're now deep into a struggle for control over the Internet and there are various actors - state, corporate, civic, criminal and military. The great genius of the Internet is its interconnectedness, but this is also what makes it an incredibly difficult problem when things start to go wrong with it and when people exploit for their own purposes.

The anonymity issue is a big question. As long as people can disguise cyber attacks and as long as there is a sort of question mark over who is responsible, then the problem will continue to exist. And of course what happens in response to that is that there is a move to try and refashion the Internet so that anonymity is impossible, which of course leads to fears among all sorts of groups - civil rights groups, NGOs, and political parties - that the Internet is going to be used simply as a method of control. So these are very sensitive issues.

The Internet has fashioned a new and complicated environment for an age-old dilemma that pits the demands of security against the desire for freedom.

It's great that the Internet can enhance and speed up our communications and that computers can do all the things they do. It's fabulous. At the same time, it changes our priorities. For example, before I would always remember people's telephone numbers and now I don't know anyone's number. So what happens if computer systems go down but you still have landlines? Well, I couldn't call anyone because I don't know anyone's number.

The internet is fracturing into a series of huge country-based intranets, in which governments define, in the name of security, what is legitimate personal and intellectual communication, and what is not.

There are two types of companies in the world: those that know they've been hacked, and those that don't.