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There are two types of backdoors, the ones that were fixed and the ones we don't know about.
The only reason why xz got exposed was because someone noticed SSH was a bit slower and decided to take it to their own hands to investigate. It’s possible this backdoor would go unnoticed for far longer if the attacker didn’t make this slight oversight.
So it might be that there have been other, successful attacks before. It’s just that this one is the one that got exposed.
Slower as in 500ms slower iirc.
Linux users when bloat
tbh given the context 500ms is a lot.
Yeah. 500ms for ssh feels like an eternity.
SSHing into my less powerful machines takes a good few seconds, so I'm not sure if I'd notice an extra 500ms. For the more powerful ones that are basically instant it would be much more noticeable.
and that kids is why you dont expose ports to the internet
The firewalls are all backdoored too!
Yes, that's called NAT
And the ones you leave for yourself to check during development and forgotten to close before release.
Shhh we don't talk about these !
This is why you should secure your own bureaucracy-bypassing backdoor with a long ass key (bonus point if you use pki instead of a simple static key).
I just use the Konami code as a secret password.
don't forget the ones we got paid for very well and the ones we introduced to not go to prison