We're aware of the activity going on within the KCFDC domain. (This domain encompasses this forum as well as our main site) I haven't seen any malicious code get executed on my machine, however this doesn't mean its not possible. If you're presented with a download or popup, close it and remain calm.
We're working with our vendor to get this fixed up, so our site stops popping up scary messages. We're sorry for any inconvenience!