common back end of Unix graphical user interfaces.

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Passive and active attacks via X11. Is Wayland any better?

In The Linux Security Circus: On GUI isolation - The Invisible Things Lab's blog, Joanna Rutkowska describes attacks from one X11 app on another and the general problem of the lack of GUI-level ...
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Risks of ssh to an untrusted host?

I use ssh a lot to connect to a variety of servers at my university. The machines are administrated by students, so assume they can't really be trusted;-) What are the risks in making a ssh ...
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Security Concerns with X11 Forwarding

What are some of the security concerns and reasons either for or against allowing X11 Forwarding. I have generally taken an approach of not allowing it under the blanket guise of security. Recently, ...