ONGOING LINUX THREAT — Ebury backdoors SSH servers in hosting providers, giving the malware extraordinary reach. Infrastructure used to maintain and distribute the Linux operating system kernel was infected for two years, starting in 2009, by sophisticated malware that managed to get a hold of one of the developers’ most closely guarded resources: the /etc/shadow files that stored encrypted password data for more than 550 system users, researchers said Tuesday. The unknown attackers behind th...