For 10 years, Google’s free “I am not a robot” reCaptcha (completely automated public trust Turing test) technology has been available to businesses worldwide to thwart criminals using bots to enter their websites. Currently, about six million businesses use the verification technology. For the past three years, an enterprise version has been available to large businesses to fight account takeover. This paid product operates behind the scenes, invisible to anyone scrolling through a webpage. Users never interact with it. This version of reCaptcha leverages Google’s database of email...