Couldn’t the same analogy be used if I left my front door unlocked? The door would happily say: “yes, you may enter” to anyone trying the handle.
I think the real question here is: did the website provide enough information for the user to have been assumed to understand that what they were accessing wasn’t meant to be public (e.g. did the door look like a door to a private property)? And did the user cease to access the data once they understood it (e.g. did they close the door and leave)?
I think the real question here is: did the website provide enough information for the user to have been assumed to understand that what they were accessing wasn’t meant to be public (e.g. did the door look like a door to a private property)? And did the user cease to access the data once they understood it (e.g. did they close the door and leave)?