Xlibre
Xlibre
Posted Jun 23, 2025 8:29 UTC (Mon) by cortana (subscriber, #24596)In reply to: Xlibre by raven667
Parent article: Ubuntu 25.10 to drop support for GNOME on Xorg
The SECURITY extension allows certain clients to be marked as "untrusted" which prevents them from being able to spy on input events, take screenshots of other clients and so on.
Unfortunately many clients break completely under such restrictions. For many years, Debian patched OpenSSH to disable the use of the SECURITY extension by deafult. Nowadays I think the situation is a bit better but I've not used X11 forwarding for a long time so haven't verified.