There’s a buffer overflow in Microsoft’s pathetic telnet client that will allow a third party to execute arbitrary commands on your computer. This bug affects users of Windows 95 and Windows 98. Malicious people can create a web page that executes your telnet client and runs the commands of their choosing … there’s a CIAC security bulletin about it. The Unix community has spent years trying to excise buffer overflows from common programs, and is still working on it. It seems that people are just getting started finding the buffer overflows in Windows, and we have to rely on Microsoft to fix them.