... It pre-dates TCP/IP (not to mention most of the bells and whistles malware can get its hooks into, not to mention not generally having any audio i/o at all,

... It pre-dates TCP/IP (not to mention most of the bells and whistles malware can get its hooks into, not to mention not generally having any audio i/o at all, or a bunch of other surplus doodads people expect these days that expand the threat surface of the machine).