Via Motherboard: http://motherboard.vice.com/blog/to...spanish-researcher-hacked-a-currency-detector I found this to be interesting because, instead of trying to make a forgery, he focused on altering the eyes of the reader instead. In the world of black hat, it's like altering the browser itself instead of what the browser downloads. Get someone to install your Chrome add-on and suddenly your ad impressions increase to an unprecedented rate. Adware, yes, but if voluntarily installed, there is no legal repercussion. Be creative!