The 1:1000 leverage provided by this broker FXPrimus is quite attractive to me, but I see that its regulatory license may be cloned, which I think is very dangerous.

As someone who's been around the block a few times, let me tell you that if you're thinking of trading with FXPrimus, go for the Primus Pro or PrimusZERO accounts. They've got super low spreads and trading fees, but they do require a bit more upfront capital. My advice is to pick the account that matches your level of experience and risk tolerance. Trust me, you won't regret trading with FXPrimus!