"The America Donald Trump Would Make (Again)" - http://www.huffingtonpost.com/jeff-bleich/the-america-donald-trump-_b_10307514.html
The attack starts with a chip design which has already been routed -- i.e., it's gone from a high-level design in terms of registers and data, to a low-level design in terms of gates and transistors, all the way to a physical layout of how the wires and silicon will be laid out. But instead of adding a chunk of new circuitry (which would take up space), or modifying existing circuitry significantly (which could be detected), it adds nothing more than a single logic gate in a piece of empty space.
When a wire next to this booby-trap gate flips from off to on, the electromagnetic fields it emits add a little bit of charge to a capacitor inside the gate. If it just happens once, that charge bleeds off, and nothing happens. But if that wire is flipped on and off rapidly, it accumulates in the capacitor until it passes a threshold -- at which point it triggers that gate, which flips a target flip-flop (switch) inside the chip from off to on.
If you pick a wire which normally doesn't flip on and off rapidly, and you target a vulnerable switch -- say, the switch between user and supervisor mode -- then you have a modification to the chip which is too tiny to notice, which is invisible to all known forms of detection, and if you know the correct magic incantation (in software) to flip that wire rapidly, will suddenly give you supervisor-mode access to the chip. (Supervisor mode is the mode the heart of the operating system runs in; in this mode, you have access to all the computer's memory, rather than just to your own application's)
The authors of this paper came up with the idea and built an actual microchip with such a backdoor in it, using the open-source OR1200 chip as their target. I don't know if I want to guess how many three-letter agencies have already had the same idea, or what fraction of chips in the wild already have such a backdoor in them.
As said in his share, "Okay. That's it. I give up. Security is impossible."
This makes sense - his ego and his public image is so tied to "Donald Trump the gazillionaire"... He's been padding his net worth for ages. His primary asset isn't money, it's his celebrity/brand - witness his putting his name on everything he touches.
Even his fanfic financial statements don’t show enough liquid cash to run a full national campaign.
Okay. That's it. I give up. Security is impossible.
- Rensselaer Polytechnic InstituteComputer Science, 1980 - 1984
- Mozilla CorporationPrincipal Software Engineer, 2011 - present
- Commodore InternationalOS Group Lead, 1988 - 1994
- Scala Broadcast MultimediaSr. Software Engineer, 1994 - 1998
- Worldgate CommunicationsDirectory of Network Protocols, 1998 - 2011
- PlayNetProgrammer, 1984 - 1986
- GE CR&D contractorSoftware Engineer, 1986 - 1987
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