I'd wait for clarification on the Liberty issue. My understanding is that there is no backdoor master code, just a default code from the factory. That doesn't change Liberty's guilt in this scenario but does mean that it's your fault if you don't change the default factory code as soon as you get a new safe. It's been awhile, but I recall my safe had a programming code and at least 1 user code. The very first thing I did was change the programming code, then used it to create new user codes and delete the old ones, verifying that none of the old codes worked.
I'd love to hear someone knowledgeable like Jesse from Safe City chime in. If there were a default factory code, then couldn't dealers get that code when they service someone's safe? That just makes no sense from a security standpoint.