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+ - Analysis of a hardware backdoor->

Submitted by Anonymous Coward
An anonymous reader writes "Remember Reflections on Trusting Trust? We know we can't trust our compilers, or our operating systems, or our userspace software. Now even our hardware might be out to get us. This post describes how to install a backdoor in the "expansion ROM" of a PCI card, which patches the BIOS to patch GRUB to patch the Linux kernel to give the controller remote root access. The upshot is that even if the compromise is detected and the victim reinstalls the operating from CD, the backdoor will still be there. Now you know why the NSA builds all its own hardware!"
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Analysis of a hardware backdoor

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