We can identify brokers as scam if they conduct following activities:
A frequent cancellation of profit: beware of the brokers which regularly cancel earned profit.
Problems with withdrawal: bad Forex brokers can often reject withdrawals requested of clients referring to various excuses.
Unresponsive customer support: you can spend hours waiting for reply to a simple question, what will happen if you face the issue with money?
Bad reviews about a broker in the web: search reviews about Forex brokers prior to opening an account with them and if you see many poor reviews about a broker then definitely avoid it.
Reporting that deposit has not been made: if a broker says that deposit was not made even though we did, it means that you will have troubles with returning it, not no mention about earned profit.
Uneven pricing : pricing can be very uneven and quote prices may have no relation with market.
Often Requotes : one of the signs of a scam broker is a frequently faced Requote. This way it prevents a trader from closing trades at profit.
Conclusion: we hope that the above-listed characteristics of scam brokers will allow you to identify a scam broker in a proper time and avoid it.