Until about 1995, networking was an optional extra for Microsoft users.
Microsoft came to the net in the mid 1990s, took viruses with them
First attempt: “The Microsoft Network” - the original MSN (1995-1996)
Microsoft's malware helper features:
Full featured application macro programming languages
Automatic code execution (bugs by any other name)
“Any user is root” (…)
Malware writers adapted: Melissa, ILOVEYOU, Sobig, Code red, Slammer …
Microsoft: "We do not have bugs" -> "Patch Tuesday"