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Linux-based malware, spam threats offer a unique twist

Linux-based malware used to hijack servers and send out millions of spam email messages per day.

Published Thu, Mar 20 2014 6:43 PM CDT   |   Updated Sat, Aug 8 2020 10:29 AM CDT

Compromised web servers infected with Linux-based malware have been used to target visitors by spreading Windows malware, with up to 25,000 suspected cases in the past two years, researchers note.

Linux-based malware, spam threats offer a unique twist | TweakTown.com

Network operators and IT specialists have been informed to look out for select Linux malware, to ensure they haven't been caught up in the Operation Windigo cybercrime effort. The server takeover campaign still is running up to 10,000 hacked servers, which are used to distribute malware, send spam, and infect users with sophisticated rootkit exploits.

"There are two kinds of victims here: Windows end-users visiting legitimate websites hosted on compromised servers, and Linux/Unix server operators whose servers were compromised through that large server-side credential stealing network," researchers note.

Four European research groups helped compile the information, as the cybercriminals behind these threats are clever and don't leave behind a big electronic signature for investigators to follow.

An experienced tech journalist and marketing specialist, Michael joins TweakTown looking to cover everything from consumer electronics to enterprise cloud technology. A former Staff Writer at DailyTech, Michael is now the West Coast News Editor and will contribute news stories on a daily basis. In addition to contributing here, Michael also runs his own tech blog, AlamedaTech.com, while he looks to remain busy in the tech world.

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