Jamie Taylor
@gaprogman.com
Technology consultant & fractional CTO specializing in .NET architecture & security. Microsoft MVP | Host of The Modern .NET Show | Open source contributor
Pinned
Jamie Taylor
@gaprogman.com
· Jan 2
By way of a sort of introduction:
- I host The Modern .NET Show (dotnetcore.show)
- I also host Waffling Taylors (wafflingtaylors.rocks)
- I run a company (rjj-software.co.uk)
- I do open source things, including OwaspHeaders.Core (www.nuget.org/packages/Owa...)
- I host The Modern .NET Show (dotnetcore.show)
- I also host Waffling Taylors (wafflingtaylors.rocks)
- I run a company (rjj-software.co.uk)
- I do open source things, including OwaspHeaders.Core (www.nuget.org/packages/Owa...)
Reposted by Jamie Taylor
AI engineers, or folks who want to be AI engineers! Want to learn about eval engineering so you can build AI apps that work?
I'm teaching a free 5-part course on this very topic! Starts next Tuesday at 9am PT. Sign up now!
luma.com/6q19vpzb
I'm teaching a free 5-part course on this very topic! Starts next Tuesday at 9am PT. Sign up now!
luma.com/6q19vpzb
Eval Engineering for AI app developers - Lesson 1: Hello Evals! · Luma
Learn Eval Engineering in this free, 5-part, hands-on course.
90% of AI agents don't make it successfully to production. The biggest reason is the AI engineers…
luma.com
December 5, 2025 at 11:21 PM
AI engineers, or folks who want to be AI engineers! Want to learn about eval engineering so you can build AI apps that work?
I'm teaching a free 5-part course on this very topic! Starts next Tuesday at 9am PT. Sign up now!
luma.com/6q19vpzb
I'm teaching a free 5-part course on this very topic! Starts next Tuesday at 9am PT. Sign up now!
luma.com/6q19vpzb
A company which started out by sending DVDs to people on the mail is about to buy Warner Bros.
Just think about that for a second.
about.netflix.com/en/news/netf...
Just think about that for a second.
about.netflix.com/en/news/netf...
Netflix to Acquire Warner Bros. Following the Separation of Discovery Global for a Total Enterprise Value of $82.7 Billion (Equity Value of $72.0 Billion) - About Netflix
about.netflix.com
December 5, 2025 at 8:26 PM
A company which started out by sending DVDs to people on the mail is about to buy Warner Bros.
Just think about that for a second.
about.netflix.com/en/news/netf...
Just think about that for a second.
about.netflix.com/en/news/netf...
𝟭/𝟯: The .NET community is full of people building amazing things, and I want to help share those stories. The Modern .NET Show is booking guests for March 2026 onwards. If you've got a project, library, or experience worth discussing, let's record an episode.
December 5, 2025 at 1:01 PM
𝟭/𝟯: The .NET community is full of people building amazing things, and I want to help share those stories. The Modern .NET Show is booking guests for March 2026 onwards. If you've got a project, library, or experience worth discussing, let's record an episode.
𝗣𝗼𝘀𝘁 𝟭/𝟰: End of week reflection on developer experience and modern .NET
development.
The common thread through this week's content: better developer experience leads to better business outcomes. Happier teams are more productive teams.
development.
The common thread through this week's content: better developer experience leads to better business outcomes. Happier teams are more productive teams.
December 5, 2025 at 10:01 AM
𝗣𝗼𝘀𝘁 𝟭/𝟰: End of week reflection on developer experience and modern .NET
development.
The common thread through this week's content: better developer experience leads to better business outcomes. Happier teams are more productive teams.
development.
The common thread through this week's content: better developer experience leads to better business outcomes. Happier teams are more productive teams.
And if you double tap shift (to turn on caps lock) then do this 👇, it'll highlight stuff for copy/cut purposes.
I don't know who needs to hear this, but if you press and hold the space bar on your phone keyboard, sliding your finger will control the position of the cursor when you're editing text
December 5, 2025 at 7:38 AM
And if you double tap shift (to turn on caps lock) then do this 👇, it'll highlight stuff for copy/cut purposes.
𝟭/𝟯: Looking for .NET developers to feature on The Modern .NET Show (March 2026 onwards). Built a NuGet package? Contributing to OSS? Doing interesting things with Blazor or ASP .NET Core? Your fellow developers want to learn from your experience.
December 4, 2025 at 2:15 PM
𝟭/𝟯: Looking for .NET developers to feature on The Modern .NET Show (March 2026 onwards). Built a NuGet package? Contributing to OSS? Doing interesting things with Blazor or ASP .NET Core? Your fellow developers want to learn from your experience.
𝗣𝗼𝘀𝘁 𝟭/𝟰: Two pieces of content this week both emphasise the same principle:
sustainable software development balances technical excellence with developer experience.
From "The Rules of Programming" and our .NET 10 episode, here's what stood out:
sustainable software development balances technical excellence with developer experience.
From "The Rules of Programming" and our .NET 10 episode, here's what stood out:
December 4, 2025 at 1:01 PM
𝗣𝗼𝘀𝘁 𝟭/𝟰: Two pieces of content this week both emphasise the same principle:
sustainable software development balances technical excellence with developer experience.
From "The Rules of Programming" and our .NET 10 episode, here's what stood out:
sustainable software development balances technical excellence with developer experience.
From "The Rules of Programming" and our .NET 10 episode, here's what stood out:
Reposted by Jamie Taylor
Why WinQuake exists and how it works: fabiensanglard.net/winquake/
December 4, 2025 at 12:50 AM
Why WinQuake exists and how it works: fabiensanglard.net/winquake/
From now on, I am not allowed to walk and type at the same time.
So many typos in this post 👇
So many typos in this post 👇
For those whose interest lye in the intersection of #dotnet, video game engines, and Japanese language, I'd recommend checking out Capcom's official RnD YouTube channel.
Here's a video where they talk about the benefits they saw from upgrading the RE engine to C# 8
www.youtube.com/watch?v=tDUY...
Here's a video where they talk about the benefits they saw from upgrading the RE engine to C# 8
www.youtube.com/watch?v=tDUY...
RE:2023 C# 8.0 / .NET Support for Game Code, and the Future
YouTube video by CAPCOM R&D
www.youtube.com
December 4, 2025 at 5:58 AM
From now on, I am not allowed to walk and type at the same time.
So many typos in this post 👇
So many typos in this post 👇
For those whose interest lye in the intersection of #dotnet, video game engines, and Japanese language, I'd recommend checking out Capcom's official RnD YouTube channel.
Here's a video where they talk about the benefits they saw from upgrading the RE engine to C# 8
www.youtube.com/watch?v=tDUY...
Here's a video where they talk about the benefits they saw from upgrading the RE engine to C# 8
www.youtube.com/watch?v=tDUY...
RE:2023 C# 8.0 / .NET Support for Game Code, and the Future
YouTube video by CAPCOM R&D
www.youtube.com
December 3, 2025 at 7:18 AM
For those whose interest lye in the intersection of #dotnet, video game engines, and Japanese language, I'd recommend checking out Capcom's official RnD YouTube channel.
Here's a video where they talk about the benefits they saw from upgrading the RE engine to C# 8
www.youtube.com/watch?v=tDUY...
Here's a video where they talk about the benefits they saw from upgrading the RE engine to C# 8
www.youtube.com/watch?v=tDUY...
𝟭/𝟯: 🎙️ The Modern .NET Show is booking guests for March 2026 onwards. If you've built something cool with .NET, maintain an open source library, or have interesting insights to share about the ecosystem, I'd love to chat with you for an episode.
December 2, 2025 at 3:00 PM
𝟭/𝟯: 🎙️ The Modern .NET Show is booking guests for March 2026 onwards. If you've built something cool with .NET, maintain an open source library, or have interesting insights to share about the ecosystem, I'd love to chat with you for an episode.
S08E07b - Hayden Barnes and CVE-2025-33515
In this bonus episode of The Modern .NET Show, we welcomed Hayden Barnes back to the recording booth to talk about what has been called ’the worst .NET vulnerability ever’, what it is, how it affects you (because it will), and what you need to do to prot
In this bonus episode of The Modern .NET Show, we welcomed Hayden Barnes back to the recording booth to talk about what has been called ’the worst .NET vulnerability ever’, what it is, how it affects you (because it will), and what you need to do to prot
S08E07b - Hayden Barnes and CVE-2025-33515
In this bonus episode of The Modern .NET Show, we welcomed Hayden Barnes back to the recording booth to talk about what has been called ’the worst .NET vulnerability ever’, what it is, how it affects you (because it will), and what you need to do to protect your applications, and your data.
dotnetcore.show
December 2, 2025 at 2:45 PM
S08E07b - Hayden Barnes and CVE-2025-33515
In this bonus episode of The Modern .NET Show, we welcomed Hayden Barnes back to the recording booth to talk about what has been called ’the worst .NET vulnerability ever’, what it is, how it affects you (because it will), and what you need to do to prot
In this bonus episode of The Modern .NET Show, we welcomed Hayden Barnes back to the recording booth to talk about what has been called ’the worst .NET vulnerability ever’, what it is, how it affects you (because it will), and what you need to do to prot
I need silly songs full of whimsy today friends (how has it been 12 years already? Fuck cancer)
I'm thinking of such silliness and fun as this song by Mr B open.spotify.com/track/352xFf...
Trust me, it's a silly song.
I'm thinking of such silliness and fun as this song by Mr B open.spotify.com/track/352xFf...
Trust me, it's a silly song.
Hitler Gifs
open.spotify.com
December 2, 2025 at 11:00 AM
I need silly songs full of whimsy today friends (how has it been 12 years already? Fuck cancer)
I'm thinking of such silliness and fun as this song by Mr B open.spotify.com/track/352xFf...
Trust me, it's a silly song.
I'm thinking of such silliness and fun as this song by Mr B open.spotify.com/track/352xFf...
Trust me, it's a silly song.
𝗣𝗼𝘀𝘁 𝟭/𝟲: New episode of The Modern .NET Show with Kajetan Duszyńsk, author of ".NET 10 Revealed."
We dive into the changes coming in .NET 10, including some you might have missed and optimisations you can make by actually deleting code.
dotnetcore.show/season-8/bui...
We dive into the changes coming in .NET 10, including some you might have missed and optimisations you can make by actually deleting code.
dotnetcore.show/season-8/bui...
S08E08 - Building on .NET 10: A Chat with Kajetan Duszyńsk, Author of '.NET 10 Revealed'
Join Jamie Taylor as he discusses the latest updates and exciting features in .NET 10 with Kajetan Duszyńsk, a renowned expert in the field. From the new book '.NET 10 Revealed' to the future of ASP.NET Core, Kajetan shares his insights on what's coming next for .NET developers. Learn about the changes to default TLS certificates, Blazor, and Maui, as well as Kajetan's expertise on .NET Aspire and how to get involved in Polish developer communities. Get a behind-the-scenes look at Kajetan's new book and stay ahead of the curve with the latest .NET trends.
dotnetcore.show
December 2, 2025 at 9:00 AM
𝗣𝗼𝘀𝘁 𝟭/𝟲: New episode of The Modern .NET Show with Kajetan Duszyńsk, author of ".NET 10 Revealed."
We dive into the changes coming in .NET 10, including some you might have missed and optimisations you can make by actually deleting code.
dotnetcore.show/season-8/bui...
We dive into the changes coming in .NET 10, including some you might have missed and optimisations you can make by actually deleting code.
dotnetcore.show/season-8/bui...
Reposted by Jamie Taylor
EFF 🤝 @nostarchpress.bsky.social. Support the fight for privacy and free speech online when you grab this @humblebundle.com book bundle today! www.humblebundle.com/books/hacki...
Humble Tech Book Bundle: Hacking by No Starch
Turn your curiosity about computer hacking into a fast-paced, proven, and practical career with the latest Humble Tech Book Bundle!
www.humblebundle.com
December 1, 2025 at 10:00 PM
EFF 🤝 @nostarchpress.bsky.social. Support the fight for privacy and free speech online when you grab this @humblebundle.com book bundle today! www.humblebundle.com/books/hacki...
To quote Keanu: Woah!
But seriously folks, this is HUGE!
But seriously folks, this is HUGE!
GOOD NEWS! Researchers have made a HUGE breakthrough towards a UNIVERSAL antiviral. By targeting sugar molecules found on the surface of many viruses that SHARE structural similarities, they identified FOUR compounds that successfully BLOCKED infections from SEVEN different viruses.
November 30, 2025 at 2:14 PM
To quote Keanu: Woah!
But seriously folks, this is HUGE!
But seriously folks, this is HUGE!
𝗣𝗼𝘀𝘁 𝟭/𝟱: Final post in my series on "The Rules of Programming" by Chris
Zimmerman is now live.
After working through this book for CPD, I've pulled together the insights that most resonate with modern development challenges.
rjj-software.co.uk/blog/continu...
Zimmerman is now live.
After working through this book for CPD, I've pulled together the insights that most resonate with modern development challenges.
rjj-software.co.uk/blog/continu...
Practical Wisdom for the Modern Developer: Final Lessons from "The Rules of Programming" | Jamie Taylor - Fractional CTO & Technology Consultant
Practical software development advice from 'The Rules of Programming' by Chris Zimmerman. Learn about code readability, effective commenting, and team well-being to improve developer productivity and project success.
rjj-software.co.uk
November 30, 2025 at 12:31 PM
𝗣𝗼𝘀𝘁 𝟭/𝟱: Final post in my series on "The Rules of Programming" by Chris
Zimmerman is now live.
After working through this book for CPD, I've pulled together the insights that most resonate with modern development challenges.
rjj-software.co.uk/blog/continu...
Zimmerman is now live.
After working through this book for CPD, I've pulled together the insights that most resonate with modern development challenges.
rjj-software.co.uk/blog/continu...
𝗣𝗼𝘀𝘁 𝟭/𝟰: End of a heavy week covering CVE-2025-55315 across podcast episodes and technical analysis.
If you're running ASP .NET Core applications and haven't taken action yet, you're accepting significant risk. The exploitation window is already open.
If you're running ASP .NET Core applications and haven't taken action yet, you're accepting significant risk. The exploitation window is already open.
November 28, 2025 at 10:00 AM
𝗣𝗼𝘀𝘁 𝟭/𝟰: End of a heavy week covering CVE-2025-55315 across podcast episodes and technical analysis.
If you're running ASP .NET Core applications and haven't taken action yet, you're accepting significant risk. The exploitation window is already open.
If you're running ASP .NET Core applications and haven't taken action yet, you're accepting significant risk. The exploitation window is already open.
S08E08 - Building on .NET 10: A Chat with Kajetan Duszyńsk, Author of '.NET 10 Revealed'
Join Jamie Taylor as he discusses the latest updates and exciting features in .NET 10 with Kajetan Duszyńsk, a renowned expert in the field. From the new book ‘.NET 10 Revealed’ to the future of ASP.NET Core,
Join Jamie Taylor as he discusses the latest updates and exciting features in .NET 10 with Kajetan Duszyńsk, a renowned expert in the field. From the new book ‘.NET 10 Revealed’ to the future of ASP.NET Core,
S08E08 - Building on .NET 10: A Chat with Kajetan Duszyńsk, Author of '.NET 10 Revealed'
Join Jamie Taylor as he discusses the latest updates and exciting features in .NET 10 with Kajetan Duszyńsk, a renowned expert in the field. From the new book ‘.NET 10 Revealed’ to the future of ASP.NET Core, Kajetan shares his insights on what’s coming next for .NET developers. Learn about the changes to default TLS certificates, Blazor, and Maui, as well as Kajetan’s expertise on .NET Aspire and how to get involved in Polish developer communities. Get a behind-the-scenes look at Kajetan’s new book and stay ahead of the curve with the latest .NET trends.
dotnetcore.show
November 28, 2025 at 6:53 AM
S08E08 - Building on .NET 10: A Chat with Kajetan Duszyńsk, Author of '.NET 10 Revealed'
Join Jamie Taylor as he discusses the latest updates and exciting features in .NET 10 with Kajetan Duszyńsk, a renowned expert in the field. From the new book ‘.NET 10 Revealed’ to the future of ASP.NET Core,
Join Jamie Taylor as he discusses the latest updates and exciting features in .NET 10 with Kajetan Duszyńsk, a renowned expert in the field. From the new book ‘.NET 10 Revealed’ to the future of ASP.NET Core,
It's when you realise that Apple's deal with TV and Movie producers state that the villains can't use Apple products, it kinda ruins most content where people use mobile phones.
November 27, 2025 at 9:41 PM
It's when you realise that Apple's deal with TV and Movie producers state that the villains can't use Apple products, it kinda ruins most content where people use mobile phones.
Reposted by Jamie Taylor
![Comic. Panels up to the 10-year point are grayed out. New panels since the Ten Years comic, which chronicles the first ten years of PERSON 1's journey with cancer: (1) [two people in bed] PERSON 1 (woman): One more chapter? PERSON 2 (man): Don’t we both have to get up early? PERSON 1: Nnnnnggggh PERSON 2: Sure, good point. (2) [many people wearing masks, walking while looking at graphs on their phones] (3) [birds landing on people] PERSON 2 in beanie and scarf: Hah! They like *my* seeds best. PERSON 1 in scarf holding phone with a bird sitting on it: Wait, how do I take a picture of this one? (4) [two people rowing boats with tree landscape] (5) [Person 1 carries overflowing stack of things to Person 2 in bed] PERSON 1: I brought you honey lemon tea, more pillows, a cinnamon roll, Tylenol, another blanket, a– PERSON 2: It was just Appendicitis, I’m really– PERSON 1: *It is my turn to take care of you and I am going to do it right!* (6) [Two people in car] (7) [still in car) PERSON 1: Oh my god. PERSON 2: Oh my god. (8) [car driving] PERSON 1: Pull over! PERSON 2: I am! (9) [both people get out of car] (10) [Large colored panel of aurora borealis over water with both people looking on] (11) [Person 1 sits against tree while Person 2 lies on the ground] PERSON 1: Fifteen years. No sign of the cancer. (12) I *am* having some weird symptoms. Joint pain. Fatigue. I think I’m losing my close-up vision. PERSON 2: Yeah. Me too. (13) PERSON 2: I think we’re getting old. (14) PERSON 1: I guess that’s okay. PERSON 2: It’s all I wanted.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreihwhjblp5lyiwp63ouar7ocfea7evmckytoeo7rkfuoo4gw5rnrra@jpeg)
November 26, 2025 at 10:32 PM
Do you use #ClaudeCode and want it to be set up with #secureCoding best practises?
Then check this repo out
github.com/TikiTribe/cl...
Then check this repo out
github.com/TikiTribe/cl...
GitHub - TikiTribe/claude-secure-coding-rules: Secure Coding Rules for Claude Code with a particular emphasis on AIML projects
Secure Coding Rules for Claude Code with a particular emphasis on AIML projects - TikiTribe/claude-secure-coding-rules
github.com
November 26, 2025 at 8:12 PM
Do you use #ClaudeCode and want it to be set up with #secureCoding best practises?
Then check this repo out
github.com/TikiTribe/cl...
Then check this repo out
github.com/TikiTribe/cl...
𝗣𝗼𝘀𝘁 𝟭/𝟱: I've written a comprehensive analysis of CVE-2025-55315 (the Funky Chunks vulnerability) for decision makers who need to understand business impact beyond just "update your software".
rjj-software.co.uk/blog/cve-202...
rjj-software.co.uk/blog/cve-202...
CVE-2025-55315: Understanding 'Funky Chunks' and Why Your Organisation Needs to Act Now | Jamie Taylor - Fractional CTO & Technology Consultant
A critical HTTP request smuggling vulnerability affecting web frameworks globally requires immediate attention from decision makers. With a CVSS score of 9.9, CVE-2025-55315 exploits fundamental features of HTTP/1.1 to bypass security controls, potentially enabling privilege escalation, data theft, and unauthorised access to protected resources.
rjj-software.co.uk
November 26, 2025 at 1:01 PM
𝗣𝗼𝘀𝘁 𝟭/𝟱: I've written a comprehensive analysis of CVE-2025-55315 (the Funky Chunks vulnerability) for decision makers who need to understand business impact beyond just "update your software".
rjj-software.co.uk/blog/cve-202...
rjj-software.co.uk/blog/cve-202...
Because of course. www.mikeayles.com#kidoom
But also (and I've been banging this drum for many years) its because the Doom engine is one of the best software engineering projects out there.
Go read the Doom source code, and I guarantee you'll become a better engineer.
But also (and I've been banging this drum for many years) its because the Doom engine is one of the best software engineering projects out there.
Go read the Doom source code, and I guarantee you'll become a better engineer.
Michael Ayles - Automotive/Electronics/Software Engineer
www.mikeayles.com
November 26, 2025 at 6:56 AM
Because of course. www.mikeayles.com#kidoom
But also (and I've been banging this drum for many years) its because the Doom engine is one of the best software engineering projects out there.
Go read the Doom source code, and I guarantee you'll become a better engineer.
But also (and I've been banging this drum for many years) its because the Doom engine is one of the best software engineering projects out there.
Go read the Doom source code, and I guarantee you'll become a better engineer.
I don't know whether it's a #ClaudeCode thing or a #dotnet thing, but I keep finding Claude unable to detect when .NET commands complete.
It usually spins waiting for a term signal (or something), but I've seen that it throws a long timeout on the command then just waits.
It usually spins waiting for a term signal (or something), but I've seen that it throws a long timeout on the command then just waits.
November 25, 2025 at 2:23 PM
I don't know whether it's a #ClaudeCode thing or a #dotnet thing, but I keep finding Claude unable to detect when .NET commands complete.
It usually spins waiting for a term signal (or something), but I've seen that it throws a long timeout on the command then just waits.
It usually spins waiting for a term signal (or something), but I've seen that it throws a long timeout on the command then just waits.