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Impressive work on reverse engineering this. Am I correct in assuming that since this backdoor chip has access to all of the peripheral I/O that it could even
by yborg 9y ago
Impressive work on reverse engineering this.
Am I correct in assuming that since this backdoor chip has access to all of the peripheral I/O that it could even be used on a device with onboard wireless in "power off" mode, which is usually some kind of low-level sleep? So a compromise of this subsystem (or intentional backdoor) would allow one to take control of even a device that is "off". Given the trend to non-removable batteries, it might actually be impossible to prevent such an attack without physically destroying a laptop.
- carapace 9y agoYes, that's correct.
- astrobe_ 9y agoa Faraday cage laptop bag is probably a less drastic solution.
- QAPereo 9y agoI think if you're at that point, a laptop is a luxury you can't really afford.
- rubatuga 9y agoOr remove the wifi chip?
- rrix2 9y agodon't forget the microphone, and the speakers (ultrasonic exfiltration) and the display (ISTR a fairly reproducable van eck attack in the last few years?) and the cpu (various research on elliptic curve extraction by monitoring CPU power draw using off the shelf SDR equipment)
- zeep 9y agoWe are pretty much screwed... the "smart" power meters can also probably "help".