What you need to know about the global "WannaCry" cyberattack

HONG KONG -- Experts are trying to figure out who's behind a global "ransomware" software cyberattack that shut down hundreds of thousands of computers around the world by exploiting a software vulnerability.Some details about the "WannaCry" attack, which emerged late Friday, and what you can do to stay safe:HOW THE VIRUS WORKSCybersecurity experts say the worm affects computers using Microsoft operating systems and takes advantage of a vulnerability in the software to spread the infection. "Wan