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Linux Kernel security developer, working for Microsoft. Also W7TXT. Views are my own.
Topics: #Linux #kernel #security, #amateurradio, #RF, #hamradio, #electronics, #science, #radioastronomy, #physics, #space, #arduino.

📡 https://w7txt.net/
🐧 https://blog.namei.org/
☠️ https://www.facebook.com/w7txt


@MLE_online should drown out the screaming for a while?
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@jann @securepaul yep, it was hit by spam bots and I haven’t had time to clean it up.
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Edited 2 months ago

AI agents can potentially gain extensive access to user data, and even write or execute arbitrary code.

OpenAI Codex CLI uses sandboxing to reduce the risk of buggy or malicious commands: https://github.com/openai/codex/pull/763

For now, it only blocks arbitrary file changes, but there’s room to strengthen protections further, and the ongoing rewrite in will help: https://github.com/openai/codex/pull/629

Landlock is designed for exactly this kind of use case, providing unprivileged and flexible access control.

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@Geojoek no point wasting power if the signal only needs to go in a particular direction
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@david_chisnall @bradley @DavyJones also, the LLM you're using for all this might be compromised.
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@Geojoek they look like AM radio towers to me.
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Here's another 3D print project: a mounting bracket for W1GHZ dual-band microwave feed horns (10 GHz + 24 GHz).

https://github.com/xjamesmorris/dual-band-10-24-ghz-feed-mount

#amateurradio #hamradio #3dprinting #rf #microwave
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@hyeyoo yep, Autosel has been using 'AI' for years, before it was cool.
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Anyone using Claude for kernel / system level development? How do you make the most of it?
I like the idea of having something which can do deep code review - eg. does this code actually do what I specified? Are there any bugs? Obviously - but also not so obviously in a complex system. Have I broken layering abstractions? Is the code maintainable? What does the maintainer of this subsystem expect? Etc.
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@niconiconi interesting - I guess they are old tech, so old that they may not have been imported to China at the time. You’d expect to see locally made versions though?
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@niconiconi @arnobert very nice! Haven’t seen these before.
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@arnobert @niconiconi measuring receiver? What model does thjs?
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@niconiconi slot lines are still used by amateurs at microwave+ frequencies. I keep thinking about buying one. Thanks for the reminder ;)
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@akent They are good at computer.
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David Chisnall (*Now with 50% more sarcasm!*)

Excellent news yesterday, the RTOS paper was accepted at SOSP!

Huge thanks to @hle, who led on rewriting the rejected submission and made numerous improvements to the implementation.

We now have CHERIoT papers in top architecture and OS venues, I guess security and networking are the next places to aim for!

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@AB4UG protect this container at all costs
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