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XZ backdoor in a nutshell
(lemmy.zip)
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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They're more likely to be based in Eastern Europe based on the times of their commits (during working hours in Eastern European Time) and the fact that while most commits used a UTC+8 time zone, some of them used UTC+2 and UTC+3: https://rheaeve.substack.com/p/xz-backdoor-times-damned-times-and
It is also hard to be certain as they could be a night owl or a early riser.
Yeah - The post goes into a lot of detail, and they did take that into account. It's worth reading.