Something that I've just read, and feel it should be posted for those here that are using the Win XP firewall:

Wednesday 15th September 2004

New MyDoom knocks through Windows weak firewall
[PC Pro] 15:33

Kaspersky is warning of a new version of the MyDoom virus that uses a range of techniques to spread, including exploiting the same vulnerability as the infamous Sasser worm.
At times I don't know whether to applaud the 'hackers' ability to cause trouble, or cry for the same reasons ...........