Well no, thats because Google is in part with SiteAdvisor, and SiteAdvisor supposedly has found ads to the site t2t2.com which is a site that carries viruses and spyware. (I use Siteadvisor alot.) I went here and I haven't found a single pop-up or detection yet.
Take it with a grain a salt, they are probably just updated the system.
Backlight can be one giant light panel with a diffusor, but recently there's mini/micro LED backlighting, where you can control the light level for smaller areas of the screen, to get better contrast and color range.