Linux Foundation sites down after security breach

Key Linux Foundation websites have been down for maintenance for four days now, after a security breach was discovered on Thursday.

Those visiting LinuxFoundation.org, Linux.com and their subdomains still find a message from the Foundation stating the downtime was necessary "in the interest of extreme caution and security best practices".

The Linux Foundation said it believed the security breach was connected to the infection of kernel.org servers, which house the Linux kernel source code, with a Trojan in early August. The Foundation added that services were being securely restored "as quickly as possible".

"As with any intrusion and as a matter of caution, you should consider the passwords and SSH keys that you have used on these sites compromised," the statement read. "If you have reused these passwords on other sites, please change them immediately. We are currently auditing all systems and will update this statement when we have more information."

According to the Linux Foundation, the newly-breached infrastructure "houses a variety of services and programs including Linux.com, Open Printing, Linux Mark, Linux Foundation events and others, but does not include the Linux kernel or its code repositories".