Pixalate’s Web STI 2.0 rates sellers by arbitrage risk and invalid traffic (ad fraud) risk across 40+ markets, including USA, Canada, UK, Germany, France, Japan, Singapore, Mexico, and Brazil; Index Exchange, Google AdExchange, OpenX among leaders Pixalate’s Web STI 2.0 rates sellers by arbitrage risk and invalid traffic (ad fraud) risk across 40+ markets, including USA, Canada, UK, Germany, France, Japan, Singapore, Mexico, and Brazil; Index Exchange, Google AdExchange, OpenX among leaders