September 17, 2010 Microsoft issued a Security Advisory
Vulnerability in ASP.NET
This not the first time, nor will it be the last time.
Who is responsible for the security of your Web Site?
MojoPortal has a lot of documentation on Securing MojoPortal. They also have documentation on How and Why You Should Generate a Custom Machine Key.
However, in this blog post I am going to walk you through making a Custom machine key in crystal clear detail with all the pictures included.
First make sure you are logged in as administrator and go to the Administration Menu. If your screen looks like this and Security Advisor says “Needs Attention!” click Learn More. If it does not, stop reading for now and you are done.