Lottery scams usually work by the fraudster contacting the victim and telling them they can win millions of AED. The scammer will then ask for your personal info, such as credit or debit card or bank account numbers, to “claim” the prizes. The victim will then discover that they have not won anything and their details have been stolen.
Remember that once you are contacted by a person claiming that you are a winner, never give your personal information. If you are still determining whether the person is legitimate, you can write to the corresponding company directly.
There is no definitive blacklist of scamming raffling sites. However, a few websites attempt to list known prize draw scams. The UAE Gambling Commission site has a section that lists known scams. You can also report your local Better Business Bureau (BBB) to see if there have ever been any complaints against the organization.