The hackers got more time off this Christmas as a present from law enforcement: Europol this week coordinated a takedown with 15 countries worldwide that seized 27 of the most popular distributed-denial-of-service (DDoS) platforms and took them offline.Known as “booter” and “stresser” websites, these platforms let cybercriminals and hacktivists flood targets with illegal traffic, rendering websites and other web-based services inaccessible.Taken down as part of an ongoing international crackdown...