if im not mistaken, its manipulating the js code on the website.
why would anyone buy a site without exploring analytics on it.
a time on site = ZERO is a red flag
language AND location not set for your major source is a big red flag
browser distribution should be heavily with chrome and firefox AND internet explorer.
anyways, you can slowly tell with real and fake sites by simply thinking about users:
Are they on mobile? a Wide range of devices should be used.
Same goes for browser. People still use safari and opera.. that should be seen on analytics.
pages. longtail should get traffic, 1-3 uniques are still visible on analytics
country. You should get some traffic from africa. (english language website). Ok, maybe not specifically, but you should get traffic from countries that youve never even heard of.
The beauty of analytics is that it can be chopped down to the point you can CSI anything in there.