Password Verification Vulnerability In Windows 9x NETBIOS
Saw this over at HNN
A Chinese computer security company has discovered a problem with has existed in Windows for 5 years. Security-by-obscurity can last quite a while. The problem is you don't need to know the password to connect to Windows file shares if "share level" passwords are used. This means that all the Windows users on the internet that are sharing files with "share level" passwords are vulnerable. NT and Windows 2000 do not have the problem.