All these systems promise profit from a trading bot. I can show how trading bots work. It's basically software that goes in out of stock exchange and makes a winning trade. So far us developers are developing these sites and trading bots now as jobs sadly. As developer. Some of these systems honestly do make money.
Are these things safe? Everything in life has risk and reward. You just have to keep on playing until you win. You minimize your risk by keep on trying.