On Friday, 19 January 2018 12:48:27 CET wordswithn...@gmail.com wrote:
> Qubes already has built-in the capability to screenshot the entire desktop
> (Printscreen)  or the current window (Ctrl+Printscreen).

Yes, it does.

But this is not something you should use and then send to a VM becuase that 
VM then suddenly gets knowledge about all the other windows on screen that 
may be from another VM.

Imagine having your Vault VM window open with all your passwords and then 
you auto-upload a screenshot of that into a compromised VM which then causes 
the screenshot to be uploaded to a server.

I'm not aware of any way to avoid this data-leakage using the screenshot 
application in dom0.
Tom Zander
Blog: https://zander.github.io
Vlog: https://vimeo.com/channels/tomscryptochannel

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