There was no such man (and need not have been)

As explained in the first posts of the thread, the casino had been using a third party email service. That means, first, they ("the third party") knew the email addresses of the players (as all emails were going through them), and, second, the emails sent to these players were technically authentic as they were coming from legit BitCasino addresses (read, it was not some typical phishing stuff you see every other day). Hacking the email provider allowed the hackers to look and feel like they were the real casino