MacCentral talks to Steve Linford, founder and director of The Spamhaus Project:

"We need our computers to be impregnable," he says, "something that Macs have always been famous for. We are so frequently under Denial of Service attack by spam gangs that everything on our network is designed around surviving it.

"With Mac OS X, we can flip vital services onto backup circuits and IP set-ups in seconds, trace attackers, and weather the storm without our services being interrupted. I don't sit around wondering how many crackers and script-kiddies are hammering our servers; I know those Macs aren't letting them in."