SMillerNL

Fair enough, you can do some sandboxing this way. But SELinux is not a sandboxing tool in the same way bubblewrap or landlock are. It’s a tool that can put gates around your tools until it’s a sandbox, but SELinux as sandboxing is not in the spirit of “tools doing one thing and doing it well”

SELinux and Bubblewrap are two very different technologies. They could get out of each other’s way better, but you cannot “sandbox with SELinux”.

Time to ask for a refund of the 0 money you paid to use it.

Since it’s Firefox based, do they even have the option to release their software with GPL components?

Not disagreeing with you, but since the author is asking about GitHub… the XZ GitHub didn’t actually have any malicious code. Only the website tarbal did.