According to a report from the Department of Information Security, fraud by announcing a 2-way SIM lock because the subscription has not been standardized is one of 24 most common forms of fraud as of the first half of 2023. So how to recognize and avoid this scam? Let's Anti-Phishing (CLĐ) learn more through the article below.
I. Current situation of "sim lock" notification scam
At the request of the Ministry of Information and Communications, from March 15, 2023, network operators have issued a notice instructing customers to update and standardize information for subscribers that do not match the national database. residential house.
Taking advantage of this regulation, the "sim lock" notification scam quickly recurred and broke out strongly. Just a short time after the network implemented the plan, in many cases users received calls and messages from impersonators threatening to "lock the customer's subscription" and then asking for personal information. ID, citizen identification, even bank OTP code for the purpose of fraud and property appropriation.
II. Identifying characteristics and fraud tactics
Subjects impersonating officials or employees of State management agencies or network operators call and inform that the user's phone number will be blocked in both directions for 2 hours for reasons such as "fines have not been paid". ", "wrong subscriber information".
After requesting information, they will continue to guide users through the next steps such as: performing the syntax to change name, change owner of phone number information, syntax to redirect calls...
Once they have gained the right to receive calls, the subjects will log in to the victim's e-wallet application, social network account... and declare that they have forgotten the login password, and select the feature to receive calls with OTP code notification.
From there, they easily take over social network accounts, control and appropriate money in wallets, and bank accounts linked to e-wallets.
III. How to prevent property appropriation
To best prevent against this scam, you should proactively check information through the carrier's tools and proactively standardize information according to regulations and instructions from the carrier. Network operators will NOT suddenly lock customers' subscriptions but will follow the correct order of state management agencies from continuously notifying via text message to interrupting use and upgrading from temporary lock 1 afternoon to temporary 2-way lock. And 1 month after being locked in both directions, that subscription was revoked.
Therefore, to avoid being scammed and misappropriated, we have some advice for you:
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