Worldwide cyberattack could spark more trouble Monday

NEW YORK — Companies worldwide are bracing for even more fallout from the biggest cyberattack ever as their workers head back to the office Monday. The massive ransomware attacks that started late Friday have locked people out of their computers and demanded hundreds of dollars from the users before they could regain control. The attacks exploit a vulnerability in outdated versions of Microsoft Windows that is particularly problematic for corporations that don’t automatically update