I think someone is trying to hack my WiFi network? A few days ago I started getting pop-ups when I would visit certain sites with "security certificate errors" claiming some strange site did not have the proper certificate or something, it was always the same site, regardless of the actual site I was trying to visit. I turned my computer off, but my activity light on my router and modem were still flashing for a few hours afterwards. I had a WPA enabled, but I guess it was cracked? I went ahead and enabled WPA2 instead since that is supposed to be more secure, but now I am unable to access my router at all, I am not sure if someone is like blocking me out from it or what? If I plug my desktop into the modem, rather than the wifi router, I can get online just fine. So what do you guys think? Hacker?