How Do Scammers Convince Telecom Providers to Transfer SIM Access?
The scammers convince telecom providers to transfer SIM access using various social engineering and deception methods. Let's check them out:
- Social Engineering: Hackers gather a victim's personal information to impersonate them, using social engineering tactics such as phishing, vishing, data breaches, and social media manipulation. Once they have enough information, they call the mobile service provider and pretend to be the victim.
- Deception: The attackers call the telecom service provider's helpline and claim that they have lost their phones or had been stolen. So, they need to transfer the same number to a new SIM card. Even if they cannot furnish account details (by pretending they have forgotten the same), they provide sufficient personal details that help them pass security verification.
- Exploit Loopholes in Security Procedures: Some service providers often have weak verification processes, such as not having strict MFA for account transfers or allowing SIM swapping through automated systems. Hackers may also exploit the security loopholes to persuade the telecom providers.
How SIM Swapping Fraud Exploits Phone-based Security?
SIM swapping fraud manipulates phone-based security by taking over a target's phone number and accessing SMS-based authentication codes or OTPs.Â
Hackers use social engineering or stolen personal data to convince a telecom carrier to transfer the victim's number to a new SIM card.Â
Once SIM swapping is done, they sidestep SMS-based two-factor authentication (2FA), reset passwords, and get access to confidential accounts like banking, email, and social media handles.
This method exploits the dependence on phone numbers for identity verification, making SMS-based security easy to hijack.
How SIM Swap Fraud Works?
Here is a step-by-step process of how a sim swap attack works:
- Collecting personal information: Hackers manage to gather personal data about the target via leaked confidential information, social media accounts, public records, data breaches, or social engineering methods.
- Reaching out to the telecom service provider: Once they have enough personal data, they call the target's mobile carrier and pretend to be the subscriber. They claim their phone was stolen, lost, or not working properly. So, they need a SIM replacement. To get through the security check, they produce the stolen information, such as name, address, date of birth, etc.
- Convincing the service provider to provide a duplicate SIM: The fraudsters now request and convince the telecom service provider for a SIM card transfer. They manipulate the loopholes in the carrier's security to bypass identity verification.
- Cutting the victim's phone services off: Once the SIM transfer is done, the telecom service provider deactivates the real victim's SIM card, and their phone loses service. Internet connectivity, calls, and messages now go to the hacker's SIM card.
- Taking over online accounts: Attackers use the victim's phone number to reset passwords of all crucial accounts - banking, social media, and email. Now, the hackers can access whatever OTPs or authentication codes the phone number receives. It allows them to gain full control of the accounts, withdraw money, impersonate the target for conducting more frauds, etc.
Warning Signs of SIM Swap Fraud
What to do if you've been sim-swapped? Well, to fight a SIM swap attack, you need to understand the signs of a SIM swap in the first place. Here you go:
- Sudden loss of network signal: Your phone suddenly shows "Emergency Calls Only" or "No Service" for a considerable period.
- Inability to make calls or send texts: You cannot even perform the basic functions of the phone like calling and texting.
- Receiving alerts about account changes not made by you: You get random notifications or emails regarding login attempts or password reset requests you did not make.
- Unexpected withdrawal alerts or login notifications: Your bank account or social media profiles show unexpected access attempts or suspicious activities.
Consequences of SIM Swap Fraud
A SIM swap cybersecurity attack can result in several severe consequences. It includes the following:
- Unauthorised financial transactions: Attackers are likely to swipe off your bank account or make fraudulent transactions.
- Identity theft and data breaches: They may steal your personal and confidential information and misuse it to plan more fraud in future.
- Loss of access to social media and email accounts: The hackers are likely to cut you off from your social media and email accounts and impersonate you.
- Compromised two-factor authentication (2FA): They can use your phone number to dodge 2FA on important accounts.
Examples of SIM Swap Fraud
Here are a couple of real-life examples of SIM swap fraud cases:
INR 4.65 Crore Lost in SIM Swapping Fraud Recovered
A victim lost INR 4.65 crore after hackers got a duplicate SIM card by using fake documents of the victim.
Once the cybercriminals took over the victim’s SIM card, they intercepted OTPs sent to the number and got access to banking details. Then, they transferred the funds from that account.
However, the victim acted promptly and reported the scam to the 1930 (cybercrime helpline). After that, the authorities traced and froze the funds before the criminals could transfer them completely.
Woman Loses INR 27 Lakh in SIM Card Hacking
A woman in Noida lost INR 27 lakh after her mobile number was compromised through a SIM swap attack.
In this case, the fraudster made a WhatsApp call to the victim and pretended to be a customer care representative of a telecom service provider.
He convinced her to activate the eSIM feature and provided a code, assuring her that a new SIM card would arrive the next day. And then, she followed the hacker's instructions and provided him with a code to activate the eSIM services.
Once the code was given, her number was deactivated right away. However, when she did not get any card the next day, she visited the telecom provider's office and applied for a duplicate SIM. When she got the SIM, she received multiple messages from her bank indicating a transfer of INR 27 lakhs via multiple transactions.
How to Protect Yourself from SIM Swap Fraud
So, now that you have a fair idea about a SIM swapping attack and how it works, let's find out how to prevent SIM swapping:
Strengthen Account Security
- Always create strong and unique passwords for every account.
- Make sure to enable 2FA and avoid SMS-based verification. You can use an authenticator app instead.
- Do not forget to set up security PINs and questions for your online accounts.
- You may also activate the SIM lock feature to ensure maximum protection.
Secure Your SIM
- Make sure to add a password to your SIM card. It can be done through your phone settings.
- Ask your telecom service provider to enable port-out or SIM swap protection. It will help you prevent phone number swaps with an intensive authorisation process.
- Do not share OTPs with anyone - no matter even if they claim to be a reliable source.
Monitor Account Activity
- Set up alerts for all transactions, password resets, and login attempts.
- Make it a habit to check your email and bank accounts for any suspicious activity.
- Always be super careful about sudden loss of network on your phone. If you come across such a case, reach out to your telecom provider without any delay.
Limit Personal Information Sharing
- It is always a good idea to stay low key on social media. For example, avoid oversharing your personal details like your full name, DOB, mother's maiden name, etc, on social media. These details can be easily used for identity verification.
- Do not download attachments or click on links that appear fishy. It could be a phishing attempt.
- Make sure to use privacy settings to limit people who can view your profile.
Report Suspicious Activity
- If you suspect a suspicious event or a SIM swap fraud, call your service provider right away and inform them about it.
- Call 1930 (cyber helpline) or visit cybercrime.gov.in to report any case of identity theft or financial scam.
- Also, file a complaint with your banking service provider to freeze any transaction that you have not performed.
Role of Cyber Insurance in Protecting Against SIM Swap Fraud
A dedicated cyber insurance plan is an important tool when it comes to protecting yourself from the financial outcomes of a SIM swap fraud. Let's check out how it helps you:
- Covers financial losses from identity theft and fraud: If you are a victim of a SIM swap attack and your funds and identity have been stolen through unscrupulous means, a good cyber insurance plan is likely to cover the financial losses.
- Provides support for legal and investigative costs: Dealing with a cyber scam is likely to involve legal assistance. Cyber insurance will help you cover the costs of legal consultation fees and forensic investigation to find out how the crime happened.
- Helps restore compromised accounts and data: A comprehensive cyber insurance policy taken from a reliable insurance provider also gives access to a proficient cyber recovery team. The experts can help you recover compromised data and accounts and prevent the odds of future breaches.
Conclusion
Taking proactive security measures and making it a thumb rule to monitor the ifs and buts (no matter how minute they seem) will help you stay ahead of SIM swap fraud.
Moreover, by using secure authentication methods like authenticator apps instead of SMS-based 2FA - which are easier to intercept, you can reduce your risk of falling prey to such scams. Also, a prompt move from your end if you notice any red flag could be a lifesaver.
Most importantly, investing in a dedicated cyber insurance policy can help you minimise financial and legal fallout, helping you recover faster.
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