Lottery scamming usually works by the scammer contacting the victim and telling them that they have won a large sum of real money. The scammer will then ask for personal information such as credit card details or bank account numbers to 'claim' the prize. The victim will then find out that they have not won anything and their details have been stolen
It is important to remember that if you are contacted by someone claiming that you have won a lottery, you should never give your personal information. If you are unsure whether the person is legitimate or not, you can contact the lottery company directly to check.
There is no definitive black list of scamming lottery sites. However, there are a few websites that attempt to list known scams. The UAE Gambling Commission's website has a section on its site that lists known lottery scams. You can also check with your local Better Business Bureau to see if there have been any complaints against the company.