The XRP of the Taiwan Stock Exchange's BitoPro was attacked, causing a price collapse and it is reported that it lost about 7 million XRP. Through the traceability analysis of the slow fog security team, the essential reason for this attack is that when BitoPro is connected to XRP, the recharge check is not rigorous and a fake recharge vulnerability occurs. The Slow Fog Security Team reminded major exchanges to pay attention to the major currency and new currency fake recharge issues that the Slow Smoke Security team has disclosed in the past. The fake recharge attack allows attackers to easily access a large number of assets on the target exchange or wallet. , causing huge losses.