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Justin Hall 2018-07-12 08:40:51 -07:00
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windows/security/threat-protection/kernel-mode-protection-for-thunderbolt.md
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Kernel DMA protection for Thunderbolt™ 3 ---
title: Kernel DMA protection for Thunderbolt™ 3
description: In the Windows 10 version 1803 release, Microsoft introduced Kernel DMA Protection, a native OS solution for protecting PCs against drive-by DMA attacks via Thunderbolt™ 3 enabled ports.
keywords: virtualization, security, malware
ms.prod: w10
ms.mktglfcycl: deploy
ms.localizationpriority: medium
ms.author: justinha
author: brianlic-msft
ms.date: 07/12/2018
---
# Kernel DMA protection for Thunderbolt™ 3
Some bus types (such as PCI, Thunderbolt™3, ExpressCard, 1394, and so on) support Direct Memory Access (DMA). Some bus types (such as PCI, Thunderbolt™3, ExpressCard, 1394, and so on) support Direct Memory Access (DMA).
DMA-enabled buses can directly read and write to arbitrary physical memory addresses (that is, all of RAM). DMA-enabled buses can directly read and write to arbitrary physical memory addresses (that is, all of RAM).