It's important for users to understand what risks they face and try to help them identify which software is likely to be problematic.

The Internet browser is the most susceptible to viruses. The browser is naive about downloading and executing software. Google is trying to help by releasing the Chrome browser as open source.

At some point, you can't lift this boulder with just your own strength. And if you find that you need to move bigger and bigger boulders up hills, you will need more and more help.

I can't say I'm particularly happy about all the spam and the viruses and the equivalent that we see on the Net, but I think technology can deal with many of the problems that we're now seeing, whether it's filtering or whatever, and laws may help a lot.

There's nothing special about wireless networks except that wireless capacity is sometimes less than what you can get, for example, from optical fiber.

There is an underlying, fundamental reliance on the Internet, which continues to grow in the number of users, country penetration and both fixed and wireless broadband access.