Recently, tricks have emerged that criminals perform fraudulent tricks to appropriate the right to use personal phone Sims, thereby appropriating passwords. account banks, e-wallets, social network accounts… to appropriate property, specifically:
Step 1: The criminal collects personal information of the victim. This information is obtained by leaking, leaking, buying and selling online…
Step 2: Taking advantage of service policies of mobile carriers that allow mobile subscribers to redirect calls to another phone number, the subject calls the victim and pretends to be a customer care employee of the home. network, ask the victim to upgrade the 3G Sim to 4G/5G Sim to improve the quality… The subject requested that the victim message the victim according to the given object’s syntax, which is actually the syntax for the victim to allow mobile subscribers call redirection to another subscriber.
After the victim successfully sends a message with the above syntax, the victim will lose control of the sim because the fraudster’s sim will become the “original” Sim, all incoming calls will immediately go to the subscriber of the scammer. scam object.
In addition, the bad guys can also ask customers to send text messages using the DS syntax to send 901. This is the syntax to change the phone SIM through a blank SIM card by texting method (SMS). When the operation is successful, the user will lose control of the SIM because the fraudster’s SIM becomes the genuine SIM and accesses the e-wallet application and online payment application to appropriate it. money.
Step 3: The scammer easily appropriates the victim’s social media accounts, bank accounts, e-wallets, etc. by logging in and selecting the “Forgot password” feature, then the service provider will send authentication code (OTP) to the phone sim that the subject has just appropriated and easily obtained the victim’s social network account, bank account, and e-wallet.
Step 4: The subject appropriates the victim’s money in the bank account, e-wallet or uses the victim’s personal information to borrow money through online lending applications, resulting in the victim owed large sums of money. .
Currently, the situation of sim card appropriation fraud is going on rampant, users are careful to avoid falling into traps of scammers. The first thing is not to give the OTP code to anyone and absolutely do not access strange links sent to the phone. The next step is to contact the carriers to block the phone number and immediately review the Gmail, bank or e-wallet accounts associated with the phone number.
In addition, users should set 2-step security mode via OTP through software applications, limiting OTP via SMS.
at Blogtuan.info – Source: Soha.vn – Read the original article here