3 ms·
Note that this technique has a pretty neat malicious use case: bridging air gaps, in a way that removing/disabling wireless chips won't stop. You'd have to hav
by comex 11y ago
Note that this technique has a pretty neat malicious use case: bridging air gaps, in a way that removing/disabling wireless chips won't stop. You'd have to have already installed malware to the airgapped machine, of course, but once that's done, chances are it'll frequently be in range of (presumably easier to compromise) Internet-connected machines, and ultrasound allows slow but bidirectional communication.
This was alleged in 2013 to have been done in a piece of malware dubbed "badBIOS", but said malware is likely imaginary.
http://arstechnica.com/security/2013/10/meet-badbios-the-mysterious-mac-and-pc-malware-that-jumps-airgaps/ http://arstechnica.com/security/2013/10/meet-badbios-the-mys...
- dmix 11y agoThis is the security downside of using laptops for everything, or motherboards with every feature: we can't rip out the hardware easily. Such as the camera or microphone built into every machine potentially listening/watching at all times.
- agumonkey 11y agoWith usb3 and the ara project, there's a possible window for an 'ATX' standard for portable devices to exist. Tiny connectors, form factors over usb or pcie. It's not a big market. The MacBook Air way is aiming at the opposite but I'm not sure it's going to go much further; these things have almost everything soldered, the next step is closer to a large SoC rather than a mainboard.
- agumonkey 11y agoWith ultrasonic speakers/receivers you could even communicate stealthily.