4 ms·
How do I go about installing receiver in the air-gapped system in the first place? I'm a little confused on that.
by abi 5y ago
How do I go about installing receiver in the air-gapped system in the first place? I'm a little confused on that.
- kybernetyk 5y agoYes, and why not install a WiFi dongle instead if I have physical access?
- lann 5y agoTo this specific point, SCIFs (https://en.m.wikipedia.org/wiki/Sensitive_compartmented_information_facility https://en.m.wikipedia.org/wiki/Sensitive_compartmented_info...) are (allegedly) protected by faraday cages.
- tgsovlerkhgsel 5y agoThis does not help with the initial compromise, but they demonstrate that with a software-only change, you can use existing LEDs as receivers in addition to senders!
- abi 5y agoCool, good to know!
- iam-TJ 5y agoOne caveat to note is the LED needs to be connected to a GPIO port that the software can control. That leads to the obvious question for high-value systems that may be targeted - presumably fixed systems not laptops/notebooks/tablets - are the activity/power LEDs commonly connected via software-controlled GPIOs or mostly part of the electronic circuit only ?
- R0b0t1 5y agoThey are usually connected to software controlled GPIOs, or at least should be assumed to be connected to them. What is not normal (for now) is analog peripherals hanging off of arbitrary pins or even being on the chip. Looks like it's all doable digitally. For a lot of chips changing the purpose of a pin may not be possible unless you are a nation state and have all of the design info on an ASIC.
- bentcorner 5y agoThe pre-print goes over the infiltration process - basically you shoot a laser at an LED on the air-gapped system, it induces a current, and you measure that current.