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Add disclaimer and clarifications about signatures

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Wrote a paragraph or two about verifying the QubesOS ISO signature and wrote a disclaimer that Qubes does not automatically verify external downloads not coming from its own repositories.
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stubbybubby 2017-04-16 15:09:04 -07:00 committed by GitHub
parent 824618d805
commit 7569cf3b95
1 changed files with 12 additions and 3 deletions
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11
security/security-guidelines.md
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@ -18,7 +18,13 @@ Download Verification
**Verify the authenticity and integrity of your downloads, [particularly the Qubes iso](/security/verifying-signatures/).** **Verify the authenticity and integrity of your downloads, [particularly the Qubes iso](/security/verifying-signatures/).**
The standard program installation command for Fedora and Qubes repositories The internet is always a dangerous place. While your connection to the Qubes website and download mirrors is encrypted, meaning that your downloads from here can't be modified by a third party en route, there is always the chance that these websites themselves have been compromised.
Signature verification allows us to validate for ourselves that these files were the ones authored and signed by their creators (in this case the Qubes development team).
Because it's so easy for a hacker who manages to tamper with the downloaded iso files this way to patch in malware, it is of the utmost importance that you **verify the signature of the Qubes iso** you use to install Qubes.
See the page on [Verifying Signatures](https://www.qubes-os.org/security/verifying-signatures/) for more information and a tutorial on how to accomplish this.
Once you have Qubes installed, the standard program installation command for Fedora and Qubes repositories
~~~ ~~~
sudo yum install <program> sudo yum install <program>
@ -38,6 +44,9 @@ Even then, you might want to consider new repositories to be **less** secure and
If you **need** to download programs that cannot be verified, then it is much less dangerous to install them in a **cloned template or a standalone VM**. If you **need** to download programs that cannot be verified, then it is much less dangerous to install them in a **cloned template or a standalone VM**.
Remember: Qubes cannot automatically verify the signature of files that come from other sources like your browser, torrenting client, or home-made tofu recipe downloader. If the providers of these downloads provide keys for you to verify the signatures of their downloads, do it!
Observing Security Contexts Observing Security Contexts
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