This content is 20 years old. I don't routinely update old blog posts as they are only intended to represent a view at a particular point in time. Please be warned that the information here may be out of date.
Microsoft has published the Windows NT 4.0 and Windows 98 threat mitigation guide, which identifies security issues in networks that include computers running Windows NT 4.0 and 98, explaining the best hardening strategies that an organisation can use until they are able to upgrade these operating systems.