Google has been building a secretive anti- ad fraud team -- now up to over 100 -- reports Advertising Age. “Mysterious to many even within Google, the group has never spoken to an outsider about the way it hunts botnets, let alone allowed someone into its offices to observe the process,” writes Advertising Age.
Google -- which served an estimated 316 billion ad impressions in September 2013, per Ghostery, far more than any other company (OpenX was second at 84.4 billion) -- remains the largest ad server on the Web. “The heft means Google is exposed when it comes to fraud, but it also puts it in position to lead the fight against the problem,” writes Advertising Age. “Until now, the company was content to work against fraud from behind the scenes, but it's hard to lead while keeping quiet.”