Moreover, the optimum security profile changes with user location. Those who really understand security know that a comprehensive security profile for the Mac is required to deal with threats via the Browser, port/firewall breaches, sensitive data protection, application sandboxing, defense against phishing, and identification of hostile IP addresses.

In fact, the number and severity of viruses is just a very small piece of the big picture.

Macintosh security is a hotly debated subject for various reasons, including the scarcity of viruses.