Despite the fact that all information about mobile subscribers in our country is classified as classified, fraudsters always find access to it. They can do this in several ways.
One of them is multicard firmware. Calling from one operator's number to another's is usually expensive. Therefore, many callers to telephone numbers of different operators use multicard. This is a standard format for a SIM card, only all the information on it is on one subscriber's account.
Official mobile operators do not even sell such cards in stores. Accordingly, it is impossible to flash such a SIM card in an official service center, therefore they are created by "craftsmen" and are sold in various retail outlets and markets. Such a card can be bought on the Internet or through an acquaintance. People who are engaged in flashing the card can easily read any information from it and write it to their device. In the future, the fraudster can use this information for personal purposes.
In addition to mobile communications, in our country there is still a fixed connection. Fixed-line operators offer their customers, in addition to telephone communication, also the Internet using new technologies. There is such a technology as dial-up, when you can access the Internet by calling a specific phone number. Subscribers who use these technologies very often become victims of scammers.
With the help of special computer programs that work on the principle of common viruses, fraudsters have access to the information they need. If such a program gets to the computer via dial-up, the connection will be interrupted for a moment, then it will be restored. The subscriber will be surprised by the expensive tariffs, since international telephone communication is already being obtained. In this case, it will be very difficult for the subscriber to prove that he did not call any Mexico. Here the operators can do nothing to help the client.
Providers provide guidance on the safe use of such a scheme. Only these instructions are rather dubious.
