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Adding info about thunderbolt 3 security and security levels #31

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Adding info about thunderbolt 3 security and security levels #31

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6 changes: 5 additions & 1 deletion linux-workstation-security.md
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# Linux workstation security checklist

Updated: 2017-12-15
Updated: 2019-08-22

*Status: CURRENT*

Expand Down Expand Up @@ -98,6 +98,10 @@ ExpressCard are guilty of the same, though some later implementations of
Thunderbolt attempt to limit the scope of memory access. It is best if the
system you are getting has none of these ports, but it is not critical, as
they usually can be turned off via UEFI or disabled in the kernel itself.
If you are getting a system that has Thunderbolt 3, it is best if you plan on
leaving it enabled to ensure that Thunderbolt security is enabled and if security
levels are supported it is set to User Authorzation. This will prevent Thunderbolt
devices from attaching to the system without the user's knowledge.

#### TPM Chip

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