Well It looks as if the Yahoo Corporate network is infected.
 
hilla.corp.yahoo.com - [19/Sep/2001:11:22:10 -0500] "GET /scripts/root.exe?/c+dir HTTP/1.0" 404 280 "-" "-"
If anyone from Yahoo is reading this list you might want to start scanning systems.
 
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Bill Larson
Network Administrator
Compu-Net Enterprises