How are Tor relays protected against backdoors?

thank you for the reply , i learn something new.
the question become, how are tor nodes protected against this, it seems to me that they can passively
de-anonymize everyone on the fly , they just need to poison the tor binary that most people end up using
on those debian-based nodes, and the trigger activate and everything is exposed.

It’s not just about the Tor binary but unfortunately most binaries.

related wiki pages:

General security question. Unspecific to Whonix.

Can be resolved as per: