As e-commerce continues to expand, online payment security is a top concern for merchants and consumers, according to a new report from American Express. The 2016 American Express Digital Payments Security Survey found that 70% of U.S. merchants are experiencing an increase in sales through online and mobile channels over the previous year. The report, which surveyed 1,021 U.S. consumers and 401 merchants, reveals that as ecommerce grows, payment security remains top of mind for both. Nearly half (48%) of consumers who shopped online in the past year have experienced payment fraud, representing nearly 80 million online consumers. Read more here.