Hi PC Worlders. Yes, we're back online after a couple of days of office-moving fun, including the sudden unexpected death of our file wall and our file server. But anyhow, you don't want to hear about my trouble, you want to hear about trouble coming soon to your mobile phone.

This is Mikko Hypponen, chief research officer at Helsinki-based F-Secure and advisor to Microsoft, IBM and the US Secret Service, interviewed in the latest Red Herring:

Q: Are mobile phones at risk from viruses?

A: "They are still relatively small, with only 323 mobile phone viruses reported, compared to some 200,000 PC viruses. Still, that's more viruses than those that attack Macs. We've also already seen the first for-profit malware on mobile phones -- a virus that caused phones to call a premium number in Russia, and charged up a huge bill that goes to the virus writer. It is much easier to make money with a mobile phone virus -- a PC doesn't have a built-in billing system."

Ouch. And don't forget it was only a short time ago that we saw the first iPod virus. How long before your smart phone, or your music player, starts spreading viruses to your silicon chip-festooned car. Not long, once they've all got IP addresses. Happy motoring.