From a list correspondent:

"To put this discussion in some perspective, I recently talked to the
CTO of a well known AV company. I asked him how many virus/malware
he was aware of by platform type. He told me:

Win32        200,000
MacOS              4
Linux            300
Symbian    341
FreeBSD       0

This is different from the number of known vulnerabilities, but still
interesting."


A