Identifying Scam Calls: Signs and How to Avoid Them

Every day, thousands of people still receive calls impersonating police, banks or relatives. Fraudulent methods are becoming more and more sophisticated, causing many people to fall into the trap. How can we identify early and protect ourselves from these tricks?

Story: Not new, but not old!

Last May, Ms. P., 68 years old, in Hanoi , received a call from a person claiming to be a police officer, informing her that she was involved in a money laundering ring. The news was true, she transferred a total of 15 billion VND in 32 transactions as requested by the subject. Similarly, a 19-year-old female student in Hanoi was also scammed of nearly 3 billion VND after a call from a person pretending to be an investigator, with her full name, address and ID number.

Cases like Ms. P. and the female student are not rare. In the first 6 months of 2025 alone, according to statistics from the Ministry of Public Security , more than 4,800 phone scams were recorded , causing hundreds of billions of dong in damage. Meanwhile, scams are increasingly changing, using high technology such as deepfake, AI voice imitation and fake international numbers.

Common forms of scam calls today

Warning of phone scams - Photo: ILLUSTRATION

Despite constant warnings, scam calls continue to appear with many different scenarios — more sophisticated, more methodical, and especially targeting the victim's confusion, fear, or trust.

One of the most familiar tricks is impersonating a government agency. . The subject often calls claiming to be from the police, the court, or even the prosecutor's office, informing the listener that they are being investigated for being involved in a certain case. While the victim is still confused, they ask for their ID number, bank account, or even money transfer to "verify information".

Many people have also received calls from fake bank employees , warning of unusual transactions in their accounts. After a few words of “support”, the subject will ask for an OTP code, card number, or to download a “checking” application – in fact, software that steals personal data.

Another trick is to impersonate an acquaintance . In many cases, the subject hacks the victim's Facebook or Zalo account and then uses that account to text or call relatives, claiming that they are short of money or have had an accident and need to transfer money urgently.

Some scammers take a softer approach, spoofing a promotion or sweepstakes call center . They claim that the caller has won a motorbike, phone, or gift certificate, but must pay a “shipping fee” or provide personal information to receive the gift.

Although the script may change over time, the common thread among these calls is that they are all aimed at stealing personal information and seizing property. It is important for the listener to stay alert and not be drawn into the bad guy's script.

Signs of a scam call

Be cautious when receiving calls from unknown numbers, especially international numbers or numbers with unknown identities. Callers often use a robotic voice or introduce themselves with personal information to gain your trust.

The content of the call is threatening and pressuring to make you panic. They ask you to provide sensitive information such as:

- OTP code or bank account information;

- Request money transfer to “handle the matter”;

- Instructions for installing strange applications, opening links or scanning QR codes can cause information insecurity.

Always be alert and double check before acting on any requests from these calls.

What should you do when you receive a suspicious call?

First of all, people should absolutely not provide personal information , bank account numbers or OTP codes to anyone over the phone, even if the other party claims to be a government agency or bank employee.

If you have any doubts about the content of the call, hang up immediately , without arguing or continuing the conversation. After that, you should check the incoming phone number by looking it up on the Internet or calling the official switchboard of the mentioned unit for verification.

If you detect signs of fraud, you can report the call to the network operator or send feedback to the Department of Information Security ( Ministry of Information and Communications ).

In case you have accidentally transferred money to a scammer, you need to immediately report to the police and relevant banks for timely support and to limit damage.

How to prevent early

To limit risks, users should proactively apply the following measures:

- Enable spam/scam call blocking on your smartphone: Android can enable “Caller ID & Spam”; iPhone uses “Silence Unknown Callers” or an app like Truecaller.

- Register not to receive spam calls at the official website of the Ministry of Information and Communications: khongquangcao.ais.gov.vn

- Share the warning with older relatives – the group most vulnerable to fraud today.

- Do not click on strange links, do not install applications from unknown sources.

Phone scams are becoming increasingly sophisticated, but by being vigilant and armed with knowledge, everyone can protect themselves. Always be cautious, do not share personal information and report any unusual signs immediately to minimize risks.

THANH THU

Source: https://tuoitre.vn/nhan-dien-cac-cuoc-goi-lua-dao-dau-hieu-va-cach-phong-tranh-20250527105109399.htm