While there is always a chance a backdoor like that exists, and thieves start memorizing default and backdoor codes and also learn how to recognize the correspo

While there is always a chance a backdoor like that exists, and thieves start memorizing default and backdoor codes and also learn how to recognize the corresponding models by sight from a non-suspicious distance... there's an orders-of-magnitde greater chance they use a low skill rock-through-window style attack.