FILE - In this Wednesday, April 22, 2015, file photo, Stijn Vanveerdeghem, left, an engineer with Cisco, shows graphics with live wireless traffic to FedEx employee Barry Poole during the RSA Conference in San Francisco, where threat analysts, security vendors and corporate IT administrators gathered to talk about malicious software, spear-phishing and other attacks that can steal money or secrets from companies and consumers. As the Friday, May 12, 2017, global cyberextortion attack that held people’s computer files hostage slows, authorities are working to catch the crooks behind it, which is a difficult task that involves searching for digital clues and following the money. (AP Photo/Marcio Jose Sanchez, File)