The one thing that’s guaranteed, with 100% certainty - for legal reasons - if you use a broker offering such leverage, is that it’s either completely unregulated or more often pretend-regulated by a subscription service regulator, as explained here.
So whatever your own due diligence tests might be, and however many or few of them there are, the idea of using a broker with that leverage actually falls completely at the first hurdle.
Brokers choose whether, where, how and by whom your account is regulated. Are they trying to protect themselves, or their customers? We all get to decide this, and whether it matters to us, for ourselves.
Some people - including everyone I’ve ever known who trades profitably - find it a trivially easy decision, but many others do seem to have some kind of problem with it.
Not everything in CFD-trading is related to broker regulation, but without understanding that clearly as a starting-point, it’s really easy to misunderstand a lot of other issues, because the relevant context for understanding them is missing.
A house you build with some of the foundations absent may not last your lifetime. To put it mildly.
This is why it’s so clearly explained, so early on, in the Babypips School of Pipsology. 
