Earlier quoted context omitted.
> Regulations say the baseband MUST control: all wireless signals (including wifi and GPS), all microphones and speakers, and it must be able to disable the camera electrically. It must have a tamper-resistant identifier (IMEI number ... kind of). This is simply not true. Source: I own a phone where this is not the case. Many Linux phones internally attach their wireless devices via USB, so there is good separation.…
Connecting a cellular radio via USB provides far less isolation than the approach of a tiny kernel driver connected to an IOMMU isolated cellular radio on mainstream devices. USB has immense complexity and attack surface, especially with a standard Linux kernel configuration. Forensic data extraction companies mostly haven't bothered using attack vectors other than USB due to it being such a weak point. Many of the t…
Really? Does the radio somehow become the USB Host in this equation and magically start driving the conversation? How?