gManZboy writes "IT security borrows some of its most basic terminology (e.g., virus) from biomedicine. It's therefore no surprise then that some of the top minds in the field have backgrounds in biomedicine. Two such figure are Peter Tippett, CTO of Cybertrust, who earned a medical degree and went on to develop what later became Norton Antivirus; and Steve Hofmeyr, who studied the marriage of biology and computation at MIT and later founded Sana Security. In this roundtable discussion, the two discuss how biomedicine informs their thinking about security and when and when not to apply the metaphor. Of particular note is their discussion of the pros and cons of using both signature and non signature-based methods of intrusion detection."