Depends on the exact make and model, but they have all the same problems as any other IoT device - insecure defaults, poor vendor support, users that can't inst

Depends on the exact make and model, but they have all the same problems as any other IoT device - insecure defaults, poor vendor support, users that can't install an update even if one is available, etc. etc. And these devices aren't just inside your house, they're right on the door! I wouldn't be surprised if a dedicated hacker could remotely open nearly any connected door lock