I developed a very simple strategy working on thin market, this strategy has been put in live trading on March. in 3.5 months, the return is 130% after around 10000 trades. the strategy is very simple. if the IT engineer in the broker spent 3 hours looking into my trading, he would figure out how I did it. if he competes with me, the strategy will cut profit at least in half. below is the equity curve of the strategy.
Of course they would. Nowadays many outsource the support. Once you contact with an issue, he'll go through all your trades and will figure it out. I'm sure it happens all the time but good luck proving anything.
You need 10,000 trades to make only 130%???? That's 0.013% per trade average. I am sure it is a very very simple system. Don't be afraid nobody will try to hack your "system" as it is not worth it. 10,000 trades in 3.5 months means average about 150 trade per day. Do you have 150 signals a day?
I still say it will not happen at a reputable broker and won't even be noticed unless you're swinging millions.
Avg profit alone is myopic. Look at his equity curve. It shows a superb risk-return. Just as saying 3.5 months is too short, we need to also look at the frequency to see if there is enough data to be statistically relevant. HFT is a prime example.