Risks of data leakage and fraud: just because a scammer can tell you your information, it doesn’t mean that he is actually a customer service officer
- 12 hours ago
- 7 min read
Dissecting the risks of targeted fraud following data leaks
Recently, Hong Kong has seen a series of large-scale corporate data breaches and ransomware attacks, involving sensitive information such as customer data, contact information, maintenance records, and member data. This serves as a reminder that data breaches are not just internal IT incidents for companies; they can also become the starting point for subsequent scams.
When many people hear about a "data breach," their first reaction might be: "What are the major consequences if someone knows my phone number, email address, or address?"
However, what we really need to be aware of is that the risks do not end immediately after a data breach; on the contrary, it may just be the beginning of another round of precise fraud.
Once scammers have your name, phone number, email, address, membership information, purchase records, and even some personal information, they can repackage an ordinary scam into a more credible, personalized, and harder-to-detect trap.
As an IT services and cybersecurity support team, we would like to remind everyone: Just because someone can provide your information does not mean that they are actually official customer service.
What can scammers do with stolen data?
Many people think that data leaks are simply "my phone number has been found out." But for scammers, a seemingly ordinary set of information is enough to piece together a very convincing story.
For example:
If you've ever bought appliances, scammers can impersonate after-sales service centers.
You are a member of a certain brand, and scammers can impersonate customer service members.
You have registered maintenance, so scammers can impersonate the maintenance department.
If you leave a delivery address, scammers can impersonate a logistics company.
If you register for multiple platforms using the same email address, scammers can try to guess your passwords and log into other accounts.
The most dangerous part is that scammers may not ask you for money right away. They might first present some plausible information to lower your guard, and then guide you step by step:
"We need to verify your information."
"Your health care registration needs to be updated."
"The system indicates that your account has an abnormal login."
"Please click this link to reactivate your member account."
"Your refund has been approved. Please enter your bank details to receive the payment."
In an era where data leaks are becoming increasingly common, the method of judgment that "the other party can tell me my information, so it must be true" is no longer reliable.
Common Risk 1: Fake customer service phone numbers or WhatsApp messages
Scammers may impersonate brand customer service, repair centers, maintenance departments, telecommunications companies, banks, online shopping platforms, or logistics companies, claiming they need to follow up on your account, order, maintenance, refund, or delivery arrangements.
Their most common tactic is to first provide some of your true information to make you feel that they are trustworthy, and then ask you to provide more sensitive information, such as:
ID card number
Credit card information
One-time verification code (OTP)
Login Password
Bank account information
Remember this important principle:
A legitimate customer service representative should not ask you for your account password, complete credit card information, or one-time verification code.
Common Risk 2: Fake SMS/Email Phishing Links
After the data is leaked, scammers can send more personalized phishing text messages or emails.
Common fishing messages might simply be:
"There is a problem with your account. Please log in."
But if the scammers obtain more information, the message can become:
"Mr. Chen, your previously registered product care information needs to be updated. Please confirm within 24 hours."
The latter is clearly more believable.
These messages usually include links that lead you to fake websites, ask you to enter personal information, reset your password, or fill in bank details. While they may appear to be official notifications, they are actually phishing websites.
Therefore, you should be extra careful when you encounter any messages that ask you to "log in immediately", "update your information", "confirm payment", or "receive a refund".
Common Risk 3: Password Cracking and Account Theft
Many people use the same or similar passwords on different platforms. If data is leaked on one platform, scammers may try to log in to other services using the same set of emails and passwords.
For example:
Online shopping platform
Email account
social media
Cloud Drive
payment platform
Company system or Microsoft 365 account
Therefore, after a data breach, it's not just the "affected platforms" that need to change their passwords. Other platforms using the same password should also change them.
Recommended practices include:
Each important account uses a different password.
Enable dual authentication MFA / 2FA.
Regularly check for any abnormal login records.
Do not reuse company email passwords on private platforms.
Do not use the same set of passwords for email, online shopping, banking, or company systems.
Password reuse is the starting point for many account thefts.
Common Risk 4: Identity Impersonation and Social Engineering Attacks
If the leaked data includes name, phone number, email, address, date of birth, part of ID card information, or transaction records, scammers can use it for identity theft.
They might try to impersonate you, contacting your service provider to request password resets, account inquiries, or service requests. They might also use your personal data to send more believable scam messages to your family, colleagues, clients, or friends.
.
Such attacks do not necessarily occur immediately. Sometimes leaked data is sold, resold, and reorganized, and is used in another fraud case weeks, months, or even longer later.
Therefore, the risk of data leaks does not disappear naturally after the news hype dies down.
The most important principle for avoiding scams: Don't be fooled by "accurate data".
Many people use a simple method to determine whether someone is trustworthy:
"He can provide my information, so it must be true."
However, in an era of data breaches, this method is no longer secure.
A safer approach is:
1. Do not provide sensitive information immediately.
No matter how urgent the other party sounds, do not immediately provide your password, one-time verification code, ID number, credit card information, or bank information.
Genuine official customer service should not ask you to provide such high-risk information.
2. Do not click the link in the message to log in.
To log in to your account, you should open the official website or official app yourself, rather than through a link in SMS, WhatsApp, or email.
Even if the information seems to come from a familiar brand, you should verify it yourself first.
3. Verify the information using official channels.
Do not rely solely on the phone number or link provided by the other party. You should check the official website, product invoices, warranty documents, or official customer service channels yourself.
The safest approach is for you to proactively contact the official channels, rather than following the routes they provide.
4. Enable dual certification
Even if the password is compromised, an extra layer of verification can greatly reduce the risk of account theft.
For email, banking, social media, cloud storage, and corporate accounts, MFA/2FA is no longer optional, but a basic line of defense.
5. Remind family and colleagues
Elderly people, students, frontline colleagues, and customer service colleagues are often high-risk targets for social engineering attacks.
Anti-fraud awareness should not rely solely on the IT department, but should become a daily habit known to everyone.
For businesses, data breaches are not simply IT incidents.
For businesses, data breaches are not just about "server problems" or "computer viruses".
It involves:
Customer trust
Brand reputation
Operations interrupted
Privacy compliance pressure
Accident Notification Arrangements
Customer query pressure
Subsequent fraud risks
The most troublesome part is that even if the company itself is not the direct perpetrator of the fraud, if customers receive fake customer service calls, phishing text messages, or are scammed because of company data leaks, they will often link the responsibility and dissatisfaction to the company.
In other words, data breaches are not just a technical issue, but a trust issue.
Once customers feel that "my data is not safe in your company's hands," it is often more difficult for a company to rebuild their confidence than to repair the system.
The boss shouldn't just ask, "Do we have antivirus software?"
Many companies believe that having antivirus software and backups means they are safe enough.
However, traditional antivirus software is no longer sufficient in the face of ransomware, phishing attacks, VPN intrusions, account theft, NAS exposure, and cloud account risks.
Corporate management should ask:
Can our backups be truly restored?
Does the backup include an offline or non-deletable version?
Have MFAs been enabled for important accounts?
Are the employees given too much authority?
Are VPNs, firewalls, NAS devices, and servers regularly updated?
Are customer data categorized and access restricted?
If I get infected today, are there any emergency response and reporting procedures?
Do our frontline colleagues know how to handle customer inquiries?
These are the key questions that truly determine whether a company can respond quickly to an accident, reduce losses, and resume operations.
i-Success's perspective: Preventing scams is a citizen's responsibility; protecting data is a corporate responsibility.
As citizens, we must learn to protect ourselves and not blindly trust others just because they can provide personal information.
However, for businesses, it is even more important to prepare in advance before an incident occurs to reduce the risks of data leaks, system encryption, business disruptions, and customer fraud.
Data security should not just be a set of antivirus software, nor should it be just a technical issue that the IT department handles silently behind the scenes. It should be an operational risk that enterprise management needs to understand.
i-Success Technology has been helping enterprises review their IT architecture, backup strategies, account permissions, endpoint protection, firewall/VPN settings, NAS and server security, and incident response procedures.
Our goal is to empower businesses to not just "hope nothing will happen," but to have the ability to prevent, detect, respond to, and recover from cyberattacks.
If you are unsure whether your company’s existing systems are adequate to handle ransomware or data breach risks, please contact us for a preliminary assessment.
WhatsApp: https://wa.me/85253831033
Website: www.i-success.hk
