Due to the appearance of exploits targeting the vulnerabilities in Internet Explorer 8 and Internet Explorer 9, Internet Storm Center (http://isd.sans.edu) has raised the Threat Level to Yellow.
You can read their write-up here:
As always, update your browsers daily.
You know hackers will be infecting websites with code that will be targeting this vulnerability. This means that if your website is infected, anyone visiting your site while using Internet Explorer 8 or 9 could have their computer infected.
Please post back if you have any questions or comments.