My security is most definitely at work, because if I use ok google to quickly search for something while the screen is lock. It pulls up the information I need but if I want to see additional information, it then tells me to put in my password to unlock for the additional information.I use the fingerprint lock on my Note 4. Not sure if there is something different in the settings but mine listens and responds even when the screen is locked.
Does make you wonder just how secure is the "locked" phone if saying Ok Google is active.
