I had the same problem, I got a red screen saying that this was an attack site. I have noticed a few things happen to my computer and have been using my virus scans to clean them. I found something that was programmed to turn off my warnings telling me that my firewall was down. Also, I had a hard time getting window's update and a few of my anti-virus's functions were getting "stuck" a lot. But, other than that, I've just been running slower than usual.
Today, it seems fine, so far, but I just got on.