Short Circuit writes "Secunia has issued a security advisory for Mozilla and Firefox. Apparently, remote web sites can spoof the user interface using XUL. (See the Firefox proof of concept.) Of course, that won't stop me from using Firefox."
Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.
Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and learn more about it. Thanks for reading, and for making the site better!