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Marek Marczykowski-Górecki 2017-05-06 23:38:03 +02:00
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common-tasks/copying-files.md
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@ -41,6 +41,6 @@ The scheme is *secure* because it doesn't allow other qubes to steal the files t
However, one should keep in mind that performing a data transfer from *less trusted* to *more trusted* qubes can always be potentially insecure, because the data that we insert might potentially try to exploit some hypothetical bug in the destination qube (e.g. a seemingly innocent JPEG that we copy from an untrusted qube might contain a specially crafted exploit for a bug in JPEG parsing application in the destination qube). This is a general problem and applies to any data transfer between *less trusted to more trusted* qubes. It even applies to the scenario of copying files between air-gapped machines. So, you should always copy data only from *more trusted* to *less trusted* qubes.
See also [this article](http://theinvisiblethings.blogspot.com/2011/03/partitioning-my-digital-life-into.html) for more information on this topic, and some ideas of how we might solve this problem in some future version of Qubes.
See also [this article](https://blog.invisiblethings.org/2011/03/13/partitioning-my-digital-life-into.html) for more information on this topic, and some ideas of how we might solve this problem in some future version of Qubes.
You may also want to read how to [revoke "Yes to All" authorization](/doc/qrexec3/#revoking-yes-to-all-authorization)