Air gapped laptops
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Specifically, it subverts your computer’s DRAM into wiggling the memory bus at 2.4 GHz – exactly the frequency range of the 802.11b/g/n Wi-Fi standards.
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It relies on the underlying electromagnetic radiation that results from any signal transmitted over a wire. The latest installment in their oeuvre is nicknamed Air-Fi, and it MacGyvers a Wi-Fi interface out of hardware that’s already in your PC. Or demoralizing, depending on your job description. Many ways, in fact, and some are truly surprising. But Mordechai Guri and his merry band of helpers at Ben-Gurion University of the Negev in Israel has found a way. Seems pretty secure, right? With no network and no place to stick removable media, there is physically no way to get data off of the computer.
#Air gapped laptops Bluetooth#
That means no Ethernet, no Wi-Fi, no Bluetooth – nothing that could potentially be used to send data outside the machine. An air-gapped computer has no CD-ROM burner, no floppy disk drive, no SD card interface, no USB slots, and no network interface of any kind. “Air gapping” is the gold standard for trapping sensitive information inside a computer and making sure it can’t be shared, transmitted, or go walkabout. Do you want to keep secure information inside? Do you want to prevent outside malware from getting in? Do you want to limit access to only the right people? The list goes on. There are a lot of ways to secure a computer, depending on what you’re trying to prevent. You’ve got to give them points for originality. And one man and his crack research team have found dozens of surprising ways to crack seemingly impenetrable computers. Some security weaknesses would be hilarious if they weren’t so serious.