When accessing a document on the web, you ask the server if you can have it. The server then says "yes" or "no" based on a set of rules. In this case, he asked and the server said "yes".
This is like going to a library, asking the librarian if you can check out a book, being told yes, and then later being arrested because they meant to say "no".
This is like going to a library, asking the librarian if you can check out a book, being told yes, and then later being arrested because they meant to say "no".