When you look at today's security threats, what worries you the most?
The phishing type of threat and e-mail scams have gotten really good. You hear a lot about the need for authentication. We should have every Web and e-mail connection authenticated from the start. People have accused me of being too utopian in my thinking. That may be true. I've heard people say it's too expensive to have authentication at every access point. But the cost of not authenticating will be much worse. And it gets hard to add on that extra security after the fact.