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A suspected credit card fraud operation being run through a fake call centre in Delhi has been uncovered by Chandigarh’s cyber crime police, leading to the arrest of four people, according to reports published on September 16, 2026.

Police allege that the group targeted credit card users by posing as representatives offering attractive benefits such as welcome offers and reward points. The case highlights how fraudsters can use seemingly genuine customer-service calls and financial offers to gain the trust of potential victims.

Fake Call Centre Allegedly Targeted Credit Card Users

According to the reported investigation, the suspected operation was being run from Delhi and was allegedly targeting credit card holders in different parts of the country.

The callers reportedly used attractive offers and reward-related incentives to engage with potential victims. Such approaches can make a fraudulent call appear similar to a legitimate promotional or customer-service communication.

Police are investigating the exact role of each person arrested and the wider network allegedly connected with the operation.

Malicious Links and APK Files Under Investigation

The case has also raised concerns about the use of digital tools in financial fraud.

According to the police account reported by The Tribune, the alleged operation involved fraudulent calls, malicious APK files and fake links. Such digital methods can expose victims to significant risks if they are persuaded to install an unknown application or provide confidential financial information.

An APK file is an Android application installation file. Installing an application from an unverified source can create serious security risks, particularly when the application requests unnecessary permissions.

Why Credit Card Users Need to Be Careful

Credit card users regularly receive legitimate promotional calls, messages and emails from banks and financial service providers. This can make it difficult to immediately distinguish a genuine communication from a fraudulent one.

Fraudsters may exploit this familiarity by using convincing language and attractive offers.

A caller may claim that a customer has received:

• Special reward points

• A welcome benefit

• A credit card upgrade

• Additional card benefits

• A limited-time offer

• A cashback or promotional reward

The presence of an attractive offer does not necessarily mean that the communication is genuine.

Never Share Sensitive Banking Information

Customers should remain particularly cautious when an unexpected caller requests confidential banking information.

Sensitive information may include:

• OTPs

• CVV numbers

• Card PINs

• Internet banking passwords

• UPI PINs

• Full card details

• Account login credentials

Banks and legitimate financial institutions have established communication channels. If a caller asks for sensitive information unexpectedly, customers should independently verify the request before taking any action.

Be Careful Before Installing an Unknown App

One of the major concerns in this case is the reported use of malicious APK files.

People should avoid installing applications received through unknown links, WhatsApp messages, SMS messages or unsolicited calls.

If an application is genuinely required for a banking or financial service, users should obtain it through the official app store or the financial institution’s verified website.

Installing an application simply because a caller claims it is required to receive a reward or complete a verification process can expose the device and personal information to potential risks.

Fake Customer-Service Calls Can Be Convincing

Cyber fraud does not always begin with an obviously suspicious message.

Fraudsters may use professional language, customer-service terminology and information that makes their communication appear credible.

A caller may already know a person’s name or some basic details. This does not prove that the caller represents a bank or financial institution.

Customers should independently verify unexpected calls using the official contact number provided by their bank or card issuer.

What Should You Do If You Suspect Credit Card Fraud?

If you believe that someone has attempted to obtain your financial information through a fraudulent call, do not continue sharing information.

Instead:

1. End the suspicious conversation.

2. Contact your bank or card issuer through an official channel.

3. Check recent transactions and account activity.

4. Report any unauthorized transaction immediately.

5. Preserve call details, messages, links and other available evidence.

6. Report suspected cyber financial fraud to the appropriate authorities.

Prompt reporting can be particularly important when money has already been transferred or unauthorized transactions have occurred.

What This Case Highlights

The Delhi fake call-centre case is another reminder that financial fraud can combine traditional social engineering with digital tools.

Fraudsters may use phone calls to establish trust and then attempt to move victims toward links, applications or requests for sensitive information.

For consumers, the safest approach is to slow down, verify unexpected requests independently and avoid sharing confidential financial information under pressure.

Legal Process and Investigation

The four people arrested in connection with the case are facing allegations and an ongoing investigation. An arrest or police allegation does not by itself establish guilt.

Investigators will determine the alleged roles of the individuals, examine digital evidence and establish whether other people or entities were connected to the suspected operation.

Further developments may emerge as the investigation continues.

Final Thoughts

The alleged fake call-centre operation in Delhi shows how credit card users can be targeted through attractive offers and convincing phone conversations.

Consumers should remain cautious about unsolicited financial calls, avoid sharing OTPs and other confidential information, and never install unknown applications simply because a caller asks them to do so.

If a financial communication appears suspicious, verify it directly through the official bank or card issuer rather than relying on information provided by the caller.

Staying alert and verifying unexpected requests can help reduce the risk of becoming a victim of credit card and cyber fraud.

Vigilant Investigation Agency
Delhi, India | Investigation & Verification Services