"SIM cards are made thanks to the complicity of offices, or mobile operators, or other involved companies that, in fact, sell this kind of SIM cards," the specialist said.

According to him, in order to protect yourself, you need to write a statement to the telecom operator prohibiting the issuance of a duplicate SIM card.

“To fix this statement so that in the event of some pre-trial proceedings there is a copy of this statement with the marks of the telecom operator and it is possible to shift all costs and all other problems to the telecom operator, through whose fault a duplicate SIM card was issued, despite a ban on a mobile user, ”Lukatsky said.

Earlier, the developer of antivirus software ESET warned about the activation in Russia of fraud with duplicate SIM cards.