Good broker must stay under the auspices of a particular financial institution. ..
And usually a good forex brokers have participated and registered under the financial institution in the country where the forex broker is based or operates.
As in the United States brokers should be registered Futures Commission Merchant (FCM), the Commodity Futures Trading Commission (CFTC) and a member of the NFA. The CFTC and NFA done to protect traders against fraud, manipulation, or illegal trading practices. Usually the broker will list the status of Regulated (membership) they are on his site. But of course we must also do double-check, how, by matching on the site of the financial agency.