People and business households who have the habit of transferring money when making transactions need to be careful.

Recently, high-tech criminals have continuously used many new methods and tricks to defraud and appropriate property of people and businesses. Notably, subjects are taking advantage of loopholes in the process of using electronic payment devices to create fake transactions and deceive sellers.

According to An Giang Provincial Police, one of the notable tricks is to fake the sound of receiving money notification through the payment speaker. Taking advantage of the fact that some devices have not been securely set up, the subjects tried to play fake sounds announcing successful transactions.

When the cashier only listens to the loudspeaker without checking the balance changes on the banking application, the subject may receive goods or change without making actual payment, then quickly leave the store.

In addition, the subjects also targeted Smart POS payment devices by impersonating bank employees or technicians to check, maintain, and upgrade the machines. After gaining access to the device, they may try to install software from unknown sources, change the configuration, or attach unusual devices.

Some cases also use fake transaction failure notifications, causing sellers or customers to make multiple payments, causing confusion and causing property damage.

Notably, using the same Wi-Fi network for payment devices and customers also poses a potential risk of information insecurity if the system is not properly separated and secured. From there, subjects can take advantage of loopholes to access information, then impersonate bank employees or technical support staff and call to report account problems or erroneous transactions to lure people into providing OTP codes, passwords or bank account login information.

Another trick is to use a simulator application on your phone to create an image of successful transfer and payment. After showing the fake screen to the seller, the subject repeatedly urged delivery, citing slow network, the bank was processing or the system had not been updated to make the seller lose his guard and skip the step of checking the actual money received.

Faced with the above tricks, An Giang Provincial Police recommends that people, businesses and business households proactively take measures to protect assets when using electronic payment devices.

Specifically, sellers need to directly check balance fluctuations on banking applications or official payment systems before delivering goods and refunding excess money. Do not confirm transactions based solely on the sound from the money speaker, the transfer image on the customer's phone or a receipt of unknown origin.

Business establishments need to separate Wi-Fi networks for payment devices and customer service networks; Change default passwords, use strong passwords, regularly update software and security configurations. Only use equipment of clear origin, provided by a bank or legal payment intermediary.

For equipment inspection, repair, and maintenance activities, the facility owner needs to verify the identity of the person coming to work through the bank or service provider. Absolutely do not give administrative passwords or system access rights to unauthorized people, do not provide OTP codes and bank account login information to anyone.

In addition, it is necessary to regularly check the payment QR code at the counter to promptly detect cases of being replaced or overwritten with fake codes. Devices such as POS machines, cash register speakers, connection wires, and USB ports also need to be checked to detect signs of tampering or unauthorized devices being attached.

An Giang Provincial Police also requested business households to develop a unified payment confirmation process and train employees in identifying and handling fraudulent situations, especially during rush hours or when customers deliberately urge delivery.

When detecting unusual signs of payment devices, suspicious transactions or fraudulent behavior, people need to stop using the device and promptly notify the nearest police station for reception and handling according to regulations.