Miller also told Ars that the battery firmware hack could be used to create a sort of "permanent" malware infection. Such malware, or a least a portion of it, could be installed in the microcontroller's flash memory. Even if an infected computer's drive were replaced and the operating system re-installed, it's possible that an exploit could allow the malware to be reloaded from a laptop's Smart Battery System firmware.
The problem I discovered was that one of the thin walls between the holes had broken and bent down, forming a ramp. When I plugged the DVI adapter into my computer, two of the pins went into the same hole, and the projector could no longer understand the output from my computer.
However, it doesn’t end there. When I plugged the DVI adapter into the broken socket, the ramp formed by the broken wall bent the corresponding pin upwards, forming a wedge with the adjacent pin. Then, when any other Mac user plugged the same adapter into their own computer, the pin wedge would press down on that same socket wall, breaking it and bending it down in the same fashion.
What I had discovered, in essence, was a mechanical virus. It infects Mac laptops and speads via the DVI adapters. An infected adapter will infect any computer that uses it, causing that computer to infect any adapters that it comes into contact with in the future, etc.
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