I found this Veratasium documentary on the xz Jia Tan backdoor adventure quite good and surprisingly detailed:

https://www.youtube.com/watch?v=aoag03mSuXQ

The Internet Was Weeks Away From Disaster and No One Knew

YouTube
@bagder I wish they had left Stallman out of it though. He's a very problematic figure. While I do not discount the contributions he has made to Open Source and Free Software, his "other" public statements make me stay far away from everything to do with him.
@infosec812 He is part of the whole story, though. Would be weird to leave him out, like a gap in the resume.