Earlier quoted context omitted.
If I ask you to show me a document, and you willingly show me the document, who exactly is responsible for the disclosure?
Say you are invited to your friends apartment in an apartment building, but none of the apartments have locks. So you decide to open up some other random apartments and look through their things, who is responsible?
1. People who kept their doors unlocked
2. Person who randomly entered doors & found things.
We need to take care of security of our properties, though stealing is wrong.