I'd like to hear from you about what i have found out.
In our place they open a company who will accept investments which they guaranteed 400% interest for 1 month. I have found out that they do crypto trading. Is this usual to identify them as a scam?
If they are THAT good to get 400% return with any investment they wont sell their strategy and simply get painfull rich in no time. So yes, definitly a scam attempt were you will definitly lose your money.
An HYIP system where attracting investors to continue the cycle of their business, afterwards when no one believes them they will easily to have an exit strategy and scam most of those investors who participated with this scheme, it's always best to do your own research and study the business, never entrust your money to anyone, it's your obligation to take care of your investment.
Moving back to this thread, we really need to take a bunch of care joining or following those traders who shared their ways of trading, this business is not an easy access to richness, you have to increase your confidence making your own assessment and calling your position, a long learning process that's full of struggles, trust yourself and that's your capital.