She probably read the email and thought: "Hacker? He's a hacker? We can't hire hackers! Good thing he told me straight away, he just saved us all a lot of time!"

We know what he means, but other people take the word hacker to mean something else.

If Sony came to this site and saw this article, they'd probably think the same thing too. If the email was sent to try and get them to change their ways, it probably won't have worked at all, since they might not even understand the meaning of the message.