Thousands of websites still on NT4

Thousands of websites are still being hosted on Microsoft NT4, a huge security risk being that Microsoft has retired the operating system back in December of 2004 and has been out of the patch loop when it comes to SMB (Server Message Block) exploits.
Microsoft addressed the SMB exploit in the Februrary 2005 security update.
Via Netcraft

Personal note: Move to linux. Free, stable, and security exploit turn-arounds are almost twenty four hours maximum. What more can you ask for.