The Russian Methbot Scam Is Just the Tip of the Ad Fraud Iceberg — Fortune

In what appears to be the largest digital advertising scam in history, a group of Russian hackers reportedly built a click-fraud machine that stole up to $5 million daily from top advertisers and publishers. But even that is just the tip of the iceberg when it comes to online ad fraud. Estimates are that billions…

via The Russian Methbot Scam Is Just the Tip of the Ad Fraud Iceberg — Fortune