Posts
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Following
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Followers
357
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
jmorris

James Morris

@juanan looking forward to see Harvard's increased investment in open source!

RE: https://infosec.exchange/@juanan/114183068696835294
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jmorris

James Morris

Reply to @MisterHW@fosstodon.org
@MisterHW @breakingtaps does goniometric offer an advantage over XYZ ?
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jmorris

James Morris

#SCaLE22x videos are up!

https://www.youtube.com/@socallinuxexpo/playlists


@socallinuxexpo
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jmorris

James Morris

Playing with AlmaLinux Kitten. 
$ cat /etc/almalinux-release && getenforce
AlmaLinux Kitten release 10 (Lion Cub)
Enforcing
Nice. Very nice. @almalinux
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jmorris

James Morris

Reply to @DL2EJF@social.darc.de
@DL2EJF 40 WPM is crazy.
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jmorris

James Morris

Reply to @MLE_online@social.afront.org
@MLE_online looks like Canadian bacon?
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jmorris

James Morris

"Oh, you're a fan of π day? What are the first hundred digits?"
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jmorris

James Morris

Reply to @julie@merida.hair
@julie absolutely not a waste of time in of themselves, and also think about how many people got started in computing because of them.
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jmorris

James Morris

Ok, I'm close to giving up on running my own mail server. Spammers are winning the arms race vs. small mail servers.

What commercial services are folk using for personal mail domains?
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jmorris

James Morris

The results are in, with 18 votes. I kind of like bsky but not seeing a critical mass of people in my areas of interest.

If you answered other, please feel free to explain.

In honor of this landslide vote, here's a photo of my latest tinkering: making pipecap filters for an 11 GHz RF multiplier (using the W1GHZ board & design). I'll use brass M3 tuning screws once some arrive from McMaster-Carr, although I'd be interested to see if they are very different to stainless steel. And yes, I had to order them online after not finding any metric brass fasteners locally. Why not use SAE screws? Standard metric screws have much higher TPI, even more than fine-thread SAE. This will provide better mechanical stability & finer tuning, but then again, I'm not building a spaceship here, so 🤷

#hamradio #amateurradio #microwave #rf #nerds #fediverse

RE: https://social.kernel.org/objects/81c8273c-6a3f-43d9-bfc9-673541118280
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jmorris
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LinuxSecSummit

Linux Security Summit 🐧

🐧 Reminder!

The CfP for LSS-NA closes on Monday, March 10th.

RE: https://social.kernel.org/objects/ce535ac2-22f2-4dc4-9b97-a4dbdab01153
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jmorris

James Morris

Best place to engage on technical topics with actual people:
94% Fediverse
0% Bluesky
5% Other
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jmorris
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gigabecquerel@chaos.social

gigabecquerel

Well folks, I'm on vacation again, and you know I could not resist...

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jmorris
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mattblaze@federate.social

Matt Blaze

Reply to @mattblaze@federate.social

Telegraph poles like these, with multiple "code lines", were once a common feature along American railroads. They are distinguishable from ordinary power or telephone lines by their multitude of cables, often occupying several crossarms. They typically carried a power bus plus individual lines for the signals along the route, with more efficient encodings used as technology improved.

They've been mostly supplanted by more modern SCADA systems that don't require so many individual wires.

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jmorris

James Morris

Reply to @corbet
re: US politics
Show content
@corbet @pluralistic the main question I have is whether this administration will end at the end of the term. If so, we'll probably be ok.
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jmorris
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Omega_Scribet@mementomori.social

Omega_Scribet

Reply to @harld@masto.ai

@harld Ja, daar lijkt het sterk op.

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jmorris

James Morris

Reply to @n8dmt@mastodon.radio
@n8dmt I haven't tried modifying or making stuff at this level, yet. Could change soon.
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jmorris

James Morris

Weekend tinkering: finally made enough room for a microscope on my bench and looked at small things. The chip of interest is 0.7mm wide: a ~60 GHz amplifier.

#hamradio #amateurradio #electronics #rf #mmic #microwave #millimeterwave #mmwave
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jmorris
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LinuxSecSummit

Linux Security Summit 🐧

📢 🐧 The CfP for Linux Security Summit North America (LSS-NA) 2025 is now open!

LSS-NA will be co-located with the Open Source Summit in Denver, Colorado, USA.

🖥 https://events.linuxfoundation.org/linux-security-summit-north-america/

CfP close: March 10, 2025
Speaker notification: March 31, 2025
Event: June 26-27, 2025

#linux #linuxsecuritysummit #linuxfoundation #opensource #security
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jmorris

James Morris

"We’re writing to inform you that we intend to discontinue sending expiration notification emails. " https://letsencrypt.org/2025/01/22/ending-expiration-emails/

Understandable, but I'm guessing this will cause a lot of breakage for a while & train people to click through browser security warnings. Thoughts?
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