A chipset for a terminal (ME), the chipset comprising: - at least one secure processor (SP) into which a one-time programmable memory (OTP area) is integrated, - a modem (BB); - an application processor (AP); and - a memory chip with a rewritable non-volatile memory (NVM, ext NVM, int NVM), wherein the secure processor (SP) has a higher security level than the application processor (AP), wherein a secure channel (S-CH) is set up between the at least one secure processor (SP) and the modem (BB) via a system bus for secured transmission of data between the secure processor (SP) and the modem (BB), wherein at least one terminal serial number (IMEI) of the terminal (ME) is stored in the one-time programmable memory (OTP area) or in the memory chip (NVM, ext NVM, int NVM), wherein a key for setting up and operating the secure channel (S-CH) is stored in the one-time programmable memory (OTP area), and wherein access to information for securing the terminal serial number (IMEI) and/or the terminal serial number (IMEI) is exclusively granted to the secure processor (SP); wherein an encryption key for encrypting the terminal serial number (IMEI) or a securing key, from which an encryption key for encrypting the terminal serial number (IMEI) can be derived, is also stored in the one-time programmable memory (OTP area); and wherein the chipset further comprises an encryption device which is set up to encrypt the terminal serial number (IMEI) with the encryption key to form an encrypted terminal serial number (enc(IMEI)) and to store the encrypted terminal serial number (enc(IMEI)) in the rewritable, non-volatile memory (NVM, ext NVM, int NVM). - at least one secure processor (SP) into which a one-time programmable memory (OTP area) is integrated, - a modem (BB); - an application processor (AP); and - a memory chip with a rewritable non-volatile memory (NVM, ext NVM, int NVM), wherein the secure processor (SP) has a higher security level than the application processor (AP), wherein a secure channel (S-CH) is set up between the at least one secure processor (SP) and the modem (BB) via a system bus for secured transmission of data between the secure processor (SP) and the modem (BB), wherein at least one terminal serial number (IMEI) of the terminal (ME) is stored in the one-time programmable memory (OTP area) or in the memory chip (NVM, ext NVM, int NVM), wherein a key for setting up and operating the secure channel (S-CH) is stored in the one-time programmable memory (OTP area), and wherein access to information for securing the terminal serial number (IMEI) and/or the terminal serial number (IMEI) is exclusively granted to the secure processor (SP); wherein an encryption key for encrypting the terminal serial number (IMEI) or a securing key, from which an encryption key for encrypting the terminal serial number (IMEI) can be derived, is also stored in the one-time programmable memory (OTP area); and wherein the chipset further comprises an encryption device which is set up to encrypt the terminal serial number (IMEI) with the encryption key to form an encrypted terminal serial number (enc(IMEI)) and to store the encrypted terminal serial number (enc(IMEI)) in the rewritable, non-volatile memory (NVM, ext NVM, int NVM). <EOS>