I'm hoping this is simply a fasle-positive from a hyperactive security suite, but I wanted to bring this to your attention. This was sent to me by a user who received this from his Webroot SecureAnywhere browser filtration.
Have you heard any other such reports? Perhaps this is something Nabble can appeal or dispute with Webroot?
Thanks for your attention -- I hope this helps alleviate any potential lost traffic or association to potential security risks. And if there is a legitimate threat being reported, I hope it helps you squash that as well.
Best regards,
Dan C