[santaragolabs]

You get better security back for all the Windows machines that are in your local network, the ones that your customers use or the Windows/Azure servers you use for your day to day business.

If you dump it online way more people start looking at it. They might be able to turn it into a reliable exploit leaving you, your customers and your servers at risk.

But the last thing HN needs is another debate on the pro's and cons of full disclosure; that's been done to death in the past decade all over the web :)