The truth is:
Someone sent me this information. The support from the Casino Club was not interested in this. So I offered a German television to make a report about this DATA SCANDAL.
I did found my own datas in the database. After Casino-Club support got the information from the television, they started to get interested in the thing i was trying tol tell the support.
I did return the support already one week ago the data's - And id did sign a contract with television.
thats actually all =)
Tell, or SELL.
The rep claims you demanded MONEY in order to "keep quiet" about this - that's blackmail. The blackmail is a separate issue to the possession and use of the data. EU wide data protection laws would make it illegal for you to hang on to this data, or publish it without the consent of every player who's data you have.
Raising the scandal in the media is again a separate issue, and if the television company has been given the data itself, you may still have breached data protection laws by passing it on to a third party without proper consent.
In theory every player who's data you have could sue you for damages, as could Casino Club. The only real defence open to you is one of "public interest", that is - it is in the public interest for this breach of security at a company processing personal data to be raised in the media, even though investigating the issue requires some laws to be bent, or even broken. The success of this would vary depending on which jurisdiction hears the case.
UK Television programmes have often used data to contact the unwitting victim of a leak in order to highlight the issue, and ensure it gets the media spotlight shone onto it in order to force the company involved to handle data more securely. However, this NEVER justifies blackmailing the company involved, and the allegation here is that you demanded money from Casino Club in order for you to NOT raise this issue in the media. This suggests you were motivated by personal gain, rather than public interest.
You had better find yourself a good lawyer, since it seems Casino Club has called your bluff.