"Advertising helps fund the digital world we love today... but this vibrant ecosystem only flourishes if marketers can buy media online with the confidence that their ads are reaching real people, that results they see are based on actual interest," said Neal Mohan at Google's DoubleClick unit which develops targeted ads.
With the new acquisition, Mohan said, "our immediate priority is to include their fraud detection technology in our video and display ads products, where they will complement our existing efforts."
The move helps Google combat the practice of click fraud, where criminals use automatic programs to boost the number of clicks on an online ad to boost revenues.