, SecurityFocus 2003-04-25
Pressed by increasingly effective anti-spam efforts, senders of unsolicited commercial e-mail are resorting to outright criminality in their efforts to conceal the source of their ill-sent missives, using Trojan horses to turn the computers of innocent netizens into secret spam zombies.

Anonymous
Unix & Netware:
By default deny all access
Microsfot:
By default allow all access
Over simplified, but I think the point is clear. Look at the starting point of each of these systems.
Now I wouldn't necessarily a...
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