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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


#arduino pro tip: use LibPrintf if you want easy formatted string printing to serial.
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Trying out the AI image generation in Powerpoint.
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Hell is other people’s coding style.
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Any hints on how to correctly integrate appimage files on #Fedora 37?
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Linux Security Summit 🐧

📌 A reminder! CfP for LSS-EU closes June 5th.

RE: https://social.kernel.org/objects/e72fbf67-74c7-4945-a9c6-5ea76dd25c99
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Just looking at some code of mine from 1994, for satellite tracking, and found this optimistic gem.
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TIL: Dickie George, who spoke at the 2007 #SELinux Symposium, and who was added to the NSA HoH in 2022, is the guy who created differential cryptanalysis while reviewing the DES code from IBM! This is why the then-mysterious S boxes were added. https://www.nsa.gov/Press-Room/Digital-Media-Center/Biographies/Biography-View-Page/Article/3330261/richard-dickie-george/
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This is really something. #antipattern
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Linux Security Summit 🐧

Reminder: LSS-NA is happening this week, starting Wednesday! Virtual attendance is available for those not able to make it to Vancouver.

RE: https://social.kernel.org/objects/b29af78c-329b-4bbb-9d99-81299bd1b6e7
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@jayulfelder Anti-trans speech is a form of violence, in my view.

RE: https://mastodon.online/users/jayulfelder/statuses/110265185818357788
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Slow but sure progress on my 1kW HF/VHF amplifier power supply. Bought a PCB for the Eltek module and decided to solder the output wires (10 AWG THHN) rather than use the more common XT-60 connectors. After some research, I found out that XT-60s, commonly used for drones & RC batteries, are only rated at 30A continuous. The 60A figure is for peak current, and the available specs are very light on details generally. This PSU is being built for 40A continuous (at 50v), so the XT-60 is not sufficient. Next up will be to connect this Sparkfun CAN shield to configure & monitor the Eltek.
#hamradio #amateurradio #electronics
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Next project: assemble these components from W6PQL into an MF/HF/6m amplifier. It’s specified for 1kW but I suspect it can do more. #amateurradio #hamradio
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Linux Security Summit 🐧

📢 The CfP for the Linux Security Summit EUROPE is now open! 📢

The event will take place Sept 20-21, in Bilbao, Spain.

See the CfP here:

https://events.linuxfoundation.org/linux-security-summit-europe/program/cfp/

The CfP closes on June 5.
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@mpi_grav also fascinating -- the optimistic articles in that newsletter from 2012, before gravitational waves had been detected. This is history happening right in front of us.

RE: https://social.mpdl.mpg.de/users/mpi_grav/statuses/110141099443133941
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I’ve learned just enough #gnuradio to be dangerous. Now monitoring WSPR on two sub-bands of #8m as well as FT8 via an #rtl-sdr. Now if the sun could eject some coronal mass in this direction, that would be super. #hamradio #amateurradio #vhf #wspr
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