Many users totally ignore that LTE/3G modems built into new business laptops and tablets have a dedicated processor and operating system that could be exploited by threat actors to maintain persistent access to a compromised device.
The security researchers Mickey Shkatov and Jesse Michael from Intel’s security group in a talk at the DEF CON security conference in Las Vegas demonstrated how a malware that infect a machine could rewrite the firmware of a popular Huawei LTE modem.
The expert explained that Huawei LTE modem runs a Linux-based OS, a modification of the Android OS, and is connected to the host system through an internal USB interface. The use of an internal USB interface means that the module could be used by attackers to emulate a number of devices connected to the primary OS, including keyboard, mouse, CD-ROM drive, network card, or other USB device.
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