Usual misconception
When you install XP, you are greeted with something like 'Welcome and congratulations to the best media playing OS', and so was it with W/2000.
Nowhere do they tell you that 'This is the fastest, most stable and securest system for doing business transactions.' On the contrary MS in the EULA tell you explicit NOT to use it in critical areas. The most unsecure parts of it commonly agreed to be IE, and Outlook are impossible to get rid of - even if you have no use for them.