For years, scammers have been hijacking people’s computers into so-called botnets, opening hidden browser windows and automatically clicking on ads. That’s fooling advertisers and their ad agencies into thinking real people saw their ads, costing them billions of dollars a year in wasted spending.
Now, the fraudsters have started moving to mobile phones. Using a technique that one ad fraud detection company calls mobile device hijacking, the scammers use mobile apps such as games that run as many as 20 ads a minute, then simulate random clicks. Forensiq, a New York firm that provides ad fraud detection and prevention, today is releasing one of the first studies to look at the relatively new technique.