I recently bought a second hand Nvidia video card which runs in SLI mode with my default video card. Can it be infected with a malicious program added by the previous owner, steal data from the system (as PCIe has DMA) and send it through ethernet/wireless?
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2Maybe, yes. But if you are not a spy/NSA agent/supervillain, very unlikely.– Tom K.Apr 25, 2018 at 13:46
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Yeah this would be a DMA attack.– bigC5012Apr 25, 2018 at 19:22
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If there was a malicious code, would it be located in the bios of the video card or can it reside in another place?– fstfnApr 25, 2018 at 20:13
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