Reported August 3, 2000 by Microsoft
The IPX/SPX (NWLink) protocol used in Windows 95, Windows 98 (including second edition) is subject to denial of service (DoS) attacks. The DoS condition occurs when an IPX ping packet with a broadcast source address is sent to a system. If sent to enough machines, such a packet could cause a broadcast storm, therby flooding the network with data.
Discovered by Microsoft