Collaborate Disseminate
After reading
Xorg becomes the default display server again
and considering the security risk of xorg, I am wondering why the developers left Wayland. The fact that a few programs do not work on Wayland does not justif… Continue reading Why has Ubuntu 18.04 moved back to insecure Xorg?
Text-based Linux and Unix systems are easy to manipulate. The way the Unix I/O system works you can always fake keyboard input to another program and intercept its output. The whole system is made to work that way. Graphical X11 programs are another matter, though. Is there a way to control X11 programs like you control text programs? The answer to that question depends on exactly what you want to do, but the general answer is yes.
As usual for Linux and Unix, though, there are many ways to get to that answer. If you really want fine-grained control over …read more
There was a time when embedded system developers didn’t need to worry about graphics. When you have a PIC processor and two-line LCD, there isn’t much to learn. But if you are deploying Linux-based systems today, graphics are a real possibility. There are many options for doing Linux graphics including Wayland, X11, and frame buffers. Confused? This tutorial can help. The sections on Wayland and Mir are under construction, but that’s probably not what you are going to be using on a typical hacker project for the foreseeable future, anyway.
Of course, even inside those broad categories, you have multiple …read more
What can you do with an IR remote? How about anything? Maybe not. We’ll settle for issuing arbitrary commands and controlling tasks on our computer.
The first step in [Fungus]’s hack is straightforward: buy an IR receiver for a buck, plug it into an Arduino, and load up some IR-decoding code. If you haven’t done this before, you owe it to yourself to take some time now. Old IR remotes are very useful, and dead simple, to integrate into your projects.
But here comes the computer-control part. Rather than interpret the codes on the Arduino, the micro just sends …read more
The Buffer “Ghosting” Phenomenon
It is possible to observe contents of (old and currently used) graphics buffers on a monitor under certain circumstances, posing an information disclosure risk, when combined with shoulder su… Continue reading How to mitigate risk of X11 buffer ghosting (palinopsia bug)
I have been getting a bit paranoid regarding some of my old TrueCrypt containers. The paranoia has got nothing to do with suspicions regarding TrueCrypt itself (after the shut-down last year), rather it is regarding keyloggers sniffing my … Continue reading GUI isolation in X11 when entering Truecrypt password
