ALERT: ASP.NET Hack Attempt
I wanted to toss this out there in case there is some new or as of yet unpacthed vulnerability. This morning I had an unusual string of errors whereas someone began trying to supplant the VIEWSTATE into the URL and in turn causing an error.
Like I said, I don't know if this is anything significant but my guess is that someone was trying to get a raw error output instead of the error page.
http://yourwebsite/somepage.aspx?__VIEWSTATE=IAMAHACKERTRYINGTOSCREWYOU
If anyone knows anything about this sort of thing, let me know.