In binary options trading there is a risk of negative transactions, as well as during all other types of trading.
Fully protecting yourself against loss is not possible. However, there are rules that will protect you from not planned and deliberate loss of deposit.
Trading risks depend on the option, its liquidity and other factors.
Risk management is a science which without it is not possible to profit in online trading of forex and binary options.
If you do not use risk management for trading, any strategy may not be permanent and not produce results all of the time.
Binary options and forex are not a game of chance and not a casino you have to know how to use the system and strategies to your advantage in order to manage your bankroll properly.