4G-modems: convenient but not safe?

The world’s largest mobile operators advertise the new fast 4G network. But do we know for sure the way it is protected? Many specialists agree on the fact that 4G networks do have some weaknesses and can’t guarantee 100% information protection. There can also be some ordinary attacks on a subscriber’s SIM card that can intercept and decrypt all the used traffic or simply block the card.
GSM mobile communication is used in many governmental and private structures and in a usual life. Modern modem is actually a small computer run by Android or Linux and a few specialized applications. Exactly these applications carry the possibility of vulnerability. If a fraud pursues dishonest objectives, this attack can be developed, making the PC connected to the modem. One option is to install such an attack captured on the modem USB device driver, and then it sees the modem as an input device.
The way out is simple: use your USB-ports reasonably. It applies to USB-modems as well, as they may seem only simple communication devices.
Anyway, to get full access to the PC with the attack on the 4G-modem, attackers have full subscribers’ credentials of the particular operator portal. By means of binary SMS messages that are sent to 4G modem, the developers were able to block it completely, and built-in SIM card and intercept all incoming and outgoing traffic, with the ability to decrypt it.
That’s why many specialists agree on the fact that practically all the USB-modems existing today have high vulnerability chances and attackers are able to get full access to the equipment, which is connected to this modem.