More secure than card not present fraud

The Chinese exchange Bitasia is a trading platform that allows traders to swap a variety of cryptocurrencies including ETH, LTC, ETC, BTC, BCH, and more. This week the exchange detailed that after some contemplation the trading platform will support zero-confirmation transactions for the bitcoin cash network. A zero-confirmation transaction means that exchanges, merchants, and other businesses are willing to accept a digital currency before the first network confirmation. 

The exchange is dealing with traders who  will soon be busted as bad actors for attempting a double spend.   This is especially true at the exchange where both parties are known to the exchange. Once the exchange makes the nominal exchange, it registers with the two ledgers, almost the next thing done.  The probability that one of the parties can time it perfectly and attempt a double spend is low with high risk.