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Merged PR 11439: edits

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Justin Hall 2018-09-20 12:30:45 +00:00
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windows/security/information-protection/kernel-dma-protection-for-thunderbolt.md
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@ -6,7 +6,7 @@ ms.mktglfcycl: deploy
ms.sitesec: library
ms.pagetype: security
author: aadake
ms.date: 09/06/2018
ms.date: 09/19/2018
---
# Kernel DMA Protection for Thunderbolt™ 3
@ -19,6 +19,8 @@ Drive-by DMA attacks can lead to disclosure of sensitive information residing on
This feature does not protect against DMA attacks via 1394/FireWire, PCMCIA, CardBus, ExpressCard, and so on.
For Thunderbolt DMA protection on earlier Windows versions and other platforms that lack support for Kernel DMA Protection, please refer to Intel documentation.
## Background
PCI devices are DMA-capable, which allows them to read and write to system memory at will, without having to engage the system processor in these operations.