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Its a combined group of scammers who's are running this kind of scam projects IMO. Usually they use different website scripts where its redirects to same URL. They use this method to collect investors fund by showing different scam project packages.
Yeah I complete agree with you that its a old scam technique which happened in the past. I hope our investor will be able to measure this kind of scam projects in the future.
Take a look at a new scam accusation regarding
Seeltrade.
Again, the scammers have used the layout of cex.io. There seems to be two types of sites that use this template though, one that solely poses as an exchange, and others that offer a bonus when you sign up, but after playing in certain games and withdrawing you'll be asked to deposit first before you're allowed to withdraw.
It's certainly possible as you say that a group of people are behind all of these, despite the many domain names that are being registered and used. It's also likely that there are more than one scamming entity/group that is doing this, given the different styles of sites being utilised. It'll be hard to track down, which is why it'll still be up to individuals to recognise them.