this post was submitted on 16 Dec 2025
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Security mostly. X11 was initial used with a central server and people logged on from clients the X11 system allows easily sending your display to another computer screen by IP address. Most distros turn off X11 forwarding, but some have it open. Its a way to share screens, but also a way a remote attacker could compromise your system and watch everything you do.
Wayland is a prototol. devs are using that protocol to build a new windowing GUI. It is secure by design