That scam trick is the same with Ethereum giveaway and other common services related to crypto like MEW.
These known crypto services and exchanges are the ones that are being targeted because they have a large audience and users and they're very popular.
Right this using this fake vouch method to make this one legitimate and it's hard for newbie to spot that this is fake since they will though that they are seeing a good feedback coming from those who experience this. I also saw this before on telegram channels and now they are all over the net since and using binance since they are in the spotlight now.
So new users should be more aware on this and avoid.
They will continue to try all tricks to convince beginners so that they believe more in what they are carrying out their actions.
It is true that now Binance is getting more and more spotlight after several pumps and this is taking advantage of the scamers in other ways, whether it's from giveaways or other fake prizes, we can only verify this first and beginners must think that when asked to make a deposit, it needs to be done avoid.
Because scamers always ask for the first deposit before the prize is distributed.