Dear team SF
-Is a local broker from abroad like fxdd [gainscope], fxcm [fxmax], safe and trustworthy? and there are many other ib ib such as trader family [MRG Broker], Indonesian secret [ICMarket, Pepperstone, Fxdd], etc.
-What are the advantages and disadvantages if we register through their ib?
-Which is better between direct registration/local ib?
-Security and privacy issues; If at some point one of the above brokers is involved in a scam or other damaging situation for customers, will the ib help to resolve the issue for the safety of their customers' funds? Please answer, masters, thank you.
For Hells..
Introducing Broker (IB) is a representative of a broker. It can also be called a broker agent, or a broker's Marketing/Marketer. The function of an IB is as an official representative of the main broker. IBs serve to help investors who have difficulties related to how to invest and so on related to the world of investment.
Registering directly or through an IB is not a problem. Personally, however, I prefer to register directly. Even if you register through an IB, this is not a problem. Through an IB only to make it easier not to have difficulty opening or knowing the rules of the broker, especially if you have limitations in a foreign language (English).
In this case, the IB usually receives services/commissions for bringing in individuals/traders or receiving commissions from customer open trades.
If undesirable things happen, such as bankruptcy or scams, then the IB in this case is not responsible, because they are just representatives. They are not related to the funds of customers invested in the broker.
There are many IBs. Regarding funds, you must be careful with IBs that can facilitate deposits or withdrawals of funds. Which usually uses a personal account.
There are also IBs that also act as Changers, buying and selling Dollars. If it only buys and sells Dollars with Skrill, Neteller, Webmoney, Okpay services, it's not a problem. If it mentions being able to facilitate deposits and withdrawals, you need to be careful. It is better to buy Dollar balance (Skrill, Neteller or Web Money) then deposit directly to the broker.
You need to be careful when choosing a changer. Make sure the changer is trustworthy. Because many changers operate guerrilla-style. It would be good if your funds are large, then use wire transfer/banking services.
For the safety of your funds, it is better to choose a broker that has regulations. And provides insurance/claim of customer funds if undesirable things happen. You can see on the broker's website, usually it will provide an explanation about this. like:

Which means approximately, customer funds are stored separately. There are claims/insurance of customer funds in the event of bankruptcy or other things. For brokers that have regulations, there is guaranteed insurance of funds and customer funds are stored separately.
If problems occur with the broker, the IB in this case is not responsible for customer funds, because they are just representatives.
They are not related to the funds of customers invested in the broker. Just helping is fine. Because that is indeed the job of the IB. If what is offered is a scam broker/does not have the correct regulations, the IB may wash their hands and run away.
With the above review, you can use it as a reference in choosing an IB/broker.
Thanks.