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"For the iPhone, there are four different radio interfaces that could potentially be used for malicious purposes: the cellular modem, Wi-Fi, GPS, and NFC" Well
by jbb555 10y ago
"For the iPhone, there are four different radio interfaces that could potentially be used for malicious purposes: the cellular modem, Wi-Fi, GPS, and NFC"
Well, GPS only receives... so how is it going to detect that?
- ww520 10y agoWhen the GPS antenna is on, it gives off RF interference? Just a guess. GPS draws quite a bit of power when turned on.
- DigitalJack 10y agoProbably not from the antenna, but the downconversion and signal processing chain definitely will. They are shielded, but I'm sure some gets through.
- throwaway7767 10y agoPossibly the idea is to prevent malware already on the phone from logging location data while the radios are dark, and then uploading the historical location data when the phone reconnects? That said, it's obviously a very limited form of protection. I guess it speaks to the sad state of mobile security that this is the best Snowden and Bunnie can come up with - the only sane choice for a potential target is to assume the mobile device is untrusted and try to reduce the scope for it to snitch on the user.
- ac29 10y agoIn the the linked article, it states they intend to attach signal probes to test points on the iPhone mainboard to read when certain interfaces are active.
- slededit 10y agoI assume similar to the way radar detector-detectors work. Superheterodyne receivers mix incoming RF with an internal signal to make a much lower intermediate signal they can tune to. The device will leak some of the internal signal and you can detect it.
- walrus01 10y agoNow I wonder what the challenges would be to build a radar detector-detector-detector....
- ashitlerferad 10y agoThe article mentions the answer to that.