Security Experts at ESET firm discovered that Windigo campaign is still active and that bad actors are changing their tactics to remain under the radar. Windigo is a sophisticated malware-based campaign uncovered by security experts in March 2014, hackers behind the campaign that exploited the Linux/Ebury backdoor compromising more than 500,000 computers and 25,000 dedicated servers. The operation could be considered high damaging given its compromise of servers and the level of sophistication of the malware. The attackers decided to hit content offering adult content because of their wide audience, by compromising a single server that can affect thousands of users.”]
Source: http://securityaffairs.co/wordpress/32100/cyber-crime/operation-windigo-targets-porn-sites.html