Less than seven weeks after the massive WannaCry attack, another ransomware worm made its way around the world today (June 27). The ransomware, may be "the worst worm ever seen," according to one expert. There was evidence that it was tied to tax-collection software that the Ukrainian government requires be installed on every workplace computer in the country. Here is a list of company's infected around the world so far: Advertising giant WPP Government departments in Ukraine