Remember the software that Billy Hoffman demo'd at Shmoocon 2007 - the Javascript that turns any capable web browser into a zombie?

One Mike Schroll snagged a copy while in the audience and posted it to his website. From there, about 100 somebodies downloaded copies, which no doubt have spread farther.

You can bet that this is going to find illicit use soon. For Firefox users, I strongly suggest that you look into installing a plug-in called NoScript, which lets you decide whether or not to execute the Javascript embedded in a particular web page.

As always, read the documentation.