Unlikely in my opinion. You don't reuse the same backdoor across any products if you don't want to be noticed. Reusing means someone could run some sort of stat

Unlikely in my opinion. You don't reuse the same backdoor across any products if you don't want to be noticed. Reusing means someone could run some sort of statistical analysis and find a commonality. Ideally every product you get a backdoor into is one done in a different way so that even if one is found the others won't be found easily.