Are online frauds really impossible to prevent? People have been defrauded of large sums of money by mistrusting online information, and many have fallen victim to personal fraud cases. While technology has contributed to life progress, it has also become a tool used by criminals for deceit. The popularization of the Internet has changed people's lifestyles, but it has also contributed to cybercrime. According to the latest police statistics, in the first quarter of 2023, Hong Kong's fraud cases increased by 65% compared with the same quarter in 2022. There are an increasing number of online fraud cases, and the amount of money defrauded is also growing. However, fraud is rampant. How can it be prevented before it occurs?