If you're doing ASP.NET development then you need to check these tools out. As per this security bulletin there has been a recent rise in SQL injection attacks, exploiting vulnerabilities in sites that do not follow best practice.
So here's what you need to do:
There's a forum for MSCASI at http://forums.microsoft.com/msdn/ShowForum.aspx?ForumID=92&SiteID=1
In short, if you're doing ASP.NET development, check your code and make sure you: