A BINARY OPTIONS BROKER is a SCAM when:
1. Always encourage you to invest more money, and promise out very good things like regular profit per month (always 100%, no lose)
2. Withdrawal takes so long. They just want to delay as long as they can. An honest broker always processes a withdrawal in maximum of 48 hours. For example, CToption as a regulated binary broker takes only 48 hours to make the withdrawal process done.
3. Many complaints. Please check it on GOOGLE before you invest.
4. NO regulation. Those broker were founded freely and illegally, so that they couldn't be regulated.