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George Coldham

@george.coldham.com.au
815 followers 1.5K following 83 posts

Cloud Solution Architect - Security @ Microsoft Forever kind, curious and interested. Aussie, Dad, Gourmand International Public Speaker My opinions are my own

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Reposted by George Coldham
nextdayvideo.bsky.social @nextdayvideo.bsky.social · 05/09/2026
#pyconau @george.coldham.com.au Authentication for humans, why passkeys finally make sense. youtu.be/xBl7zaFqHrA
youtu.be
"Authentication for humans, why passkeys finally make sense." - George Coldham (PyCon AU 2026)
Authentication continues to fail not because users ignore security advice, but because our systems rely on humans managing reusable secrets. Despite password managers and multi-factor authentication, phishing and credential theft remain the most common causes of account compromise. This talk examines why password-based authentication fails at a structural level. We will explore the assumptions
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George Coldham @george.coldham.com.au · 27/07/2025
Oh but the colour it looks almost blue!
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George Coldham @george.coldham.com.au · 27/07/2025
Is that a big mantis shrimp?
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George Coldham @george.coldham.com.au · 21/06/2025
Looks great! I hope you take great pleasure in it for years.
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George Coldham @george.coldham.com.au · 18/06/2025
I'm sure everyone loved "Wii have a problem" based on tennis mishaps :D
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George Coldham @george.coldham.com.au · 20/05/2025
Zero Trust! **Verify explicitly** **Least privilege access** **Assume breach**
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George Coldham @george.coldham.com.au · 21/04/2025
I made it! 💪🏽
Author of the post standing in a weights frame between sets of squats
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George Coldham @george.coldham.com.au · 21/04/2025
Waiting for my son to fall asleep then I'll be heading to the gym for a late evening workout!
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George Coldham @george.coldham.com.au · 16/03/2025
Highlight of the trip was meeting @regularitguy.com and going for a ride in his sweet truck! Thank you again Rick!
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George Coldham @george.coldham.com.au · 16/03/2025
I was selected to be part of the Microsoft CSU Pace Setters for 2025 and the award was a trip to Redmond to meet all the other winners and build the network. I had a blast! And now I'm so thankful to be on my way home. Seattle ✈️ Singapore ✅ Singapore ✈️ Perth 🛫
A picture of my event badge and sticker with little icon badges.
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George Coldham @george.coldham.com.au · 16/03/2025
You could have a morning without responsibilities even if you woke early. That's valuable too!
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George Coldham @george.coldham.com.au · 20/02/2025
I love pancakes!
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George Coldham @george.coldham.com.au · 17/02/2025
I heard this song live, it was glorious!
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George Coldham @george.coldham.com.au · 17/02/2025
Book 8 Choose 20 books that have stayed with you or influenced you. One book per day for 20 days(or however you like), in no particular order. No explanations, no reviews, just covers. 📚💙 #BookSky #BookChallenge
This book is so good
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George Coldham @george.coldham.com.au · 16/02/2025
Book 7 Choose 20 books that have stayed with you or influenced you. One book per day for 20 days(or however you like), in no particular order. No explanations, no reviews, just covers. 📚💙 #BookSky #BookChallenge
Two people riding horses
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George Coldham @george.coldham.com.au · 15/02/2025
Book 6 Choose 20 books that have stayed with you or influenced you. One book per day for 20 days(or however you like), in no particular order. No explanations, no reviews, just covers. 📚💙 #BookSky #BookChallenge
A portrait of a eunach
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George Coldham @george.coldham.com.au · 15/02/2025
Book 6 Choose 20 books that have stayed with you or influenced you. One book per day for 20 days(or however you like), in no particular order. No explanations, no reviews, just covers. 📚💙 #BookSky #BookChallenge
A man in a red robe reaching to the sky while singing
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Reposted by George Coldham
Sami Laiho @samilaiho.com · 13/02/2025
If you are having issues with authenticating via certs, like WLAN etc using 802.1x, remember that this is now enforced on your DC, after installing the patches from Tuesday: directaccess.richardhicks.com/2025/01/27/s...
directaccess.richardhicks.com
Strong Certificate Mapping Enforcement February 2025
Are you ready? In just a few short weeks(!) Microsoft will release the February 2025 security updates. This is a critical update because Microsoft plans to enable full enforcement of strong certifi…
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George Coldham @george.coldham.com.au · 13/02/2025
Spicy margaritas and palm trees 🌴 🍸
media.tenor.com
a woman in a bikini is holding a drink in front of a pool and smiling .
Alt: a woman in a bikini is holding a drink in front of a pool and smiling .
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George Coldham @george.coldham.com.au · 13/02/2025
We all log into teams.microsoft.com and continue the fun? 🤩
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George Coldham @george.coldham.com.au · 13/02/2025
I learned to lock my computer for fear of company wide emails claiming to wear baggy pants. I did; but that was beside the point :D
media.tenor.com
a man in a yellow vest and black pants is dancing .
Alt: a man in a yellow vest and black pants is dancing .
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George Coldham @george.coldham.com.au · 13/02/2025
Vicky is awesome! She is the perfect example of someone moving into a tech career later in life.
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George Coldham @george.coldham.com.au · 13/02/2025
I use it every day, having a screen that's 7680x2160 it makes it heaps simpler to share content. It has accessibility built in as well. Plus all the links in my decks are clickable.
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George Coldham @george.coldham.com.au · 13/02/2025
Book 5 Choose 20 books that have stayed with you or influenced you. One book per day for 20 days(or however you like), in no particular order. No explanations, no reviews, just covers. 📚💙 #BookSky #BookChallenge
Front and back over of an old print for lord of the rings
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George Coldham @george.coldham.com.au · 12/02/2025
Introduce yourself with 4 video games
California GamesArk Survival EvolvedRocket LeagueGrand Theft Auto 5
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George Coldham @george.coldham.com.au · 12/02/2025
It's my most read series, but I haven't read them in more than a decade now.
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George Coldham @george.coldham.com.au · 11/02/2025
Book 4 Choose 20 books that have stayed with you or influenced you. One book per day for 20 days(or however you like), in no particular order. No explanations, no reviews, just covers. 📚💙 #BookSky #BookChallenge
*KATHARINE KERR DAGGERSPELL
THE BEST SWORD
NOVELS I HAVE
READ IN SOME TIME!
-Andre Norton
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George Coldham @george.coldham.com.au · 11/02/2025
Book 3 Choose 20 books that have stayed with you or influenced you. One book per day for 20 days(or however you like), in no particular order. No explanations, no reviews, just covers. 📚💙 #BookSky #BookChallenge
The cover of the omnibus for STEPHEN
DONALDSON
THE CHRONICLES OF THOMAS COVENANT, THE UNBELIEVER
THE CLASSIC EPIC FANTASY TRILOGY-IN ONE MOREME
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George Coldham @george.coldham.com.au · 10/02/2025
Mark is a unique man who tells good stories, I hope I can see him tell them in person again!
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George Coldham @george.coldham.com.au · 10/02/2025
Book 2 Choose 20 books that have stayed with you or influenced you. One book per day for 20 days(or however you like), in no particular order. No explanations, no reviews, just covers. 📚💙 #BookSky #BookChallenge
A beautifully illustrated castle on walls with horses in the foreground
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Reposted by George Coldham
Funny Of Internet @888.bsky.social · 09/02/2025
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George Coldham @george.coldham.com.au · 09/02/2025
Do we get an after smoked pic?
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Reposted by George Coldham
Michelle @Microsoft @codess-aus.bsky.social · 09/02/2025
Winter is coming.
The Singer Eminem looking serious wearing a black cap with a beard. In the 2nd picture he is holding a mic.
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George Coldham @george.coldham.com.au · 09/02/2025
Hi 👋
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George Coldham @george.coldham.com.au · 09/02/2025
Congratulations! I hope I make it that long!
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George Coldham @george.coldham.com.au · 09/02/2025
This is beautiful and sad
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George Coldham @george.coldham.com.au · 09/02/2025
Book 1 Choose 20 books that have stayed with you or influenced you. One book per day for 20 days(or however you like), in no particular order. No explanations, no reviews, just covers. 📚💙 #BookSky #BookChallenge
The cover of the novel the belgariad book 1, pawn of prophesy
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George Coldham @george.coldham.com.au · 12/01/2025
Finally got a selfie with a quokka!
A man with a grey beard in a wide brimmed hat posing with a quokka
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George Coldham @george.coldham.com.au · 27/12/2024
I feel like for the majority of applications the hardware requirements were met generations ago. I do wish I had a 4090 for more vram for on machine LLM fun!
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George Coldham @george.coldham.com.au · 19/12/2024
This is fantastic news!
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Reposted by George Coldham
Merill Fernando 💚 @merill.net · 17/12/2024
Thanks to a user report I've labelled and hidden this fake/misleading account from your feeds. If you are subscribed to the @bluesky.ms label you will no longer see this account. If you haven't already, this is a good time to subscribe to the @bluesky.ms label!
Screenshot of Ozone flagging Satya account as misleading
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Reposted by George Coldham
Jon Galloway @jongalloway.bsky.social · 12/12/2024
TIL #MSBuild has a fancy new logo. aka.ms/msbuildicon
Logo for MSBuild. It is a cube composed of a light purple part and a dark purple part, fitting together like puzzle pieces.
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Reposted by George Coldham
Rod Trent @rodtrent.com · 11/12/2024
Nice! The Security Copilot auditing powered by Microsoft Purview is now replicated in the Defender unified console. #SecurityCopilot
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Reposted by George Coldham
Matt Winkler @mwinkle.bsky.social · 12/12/2024
Hat tip to @merill.net for building out this labeler infra and experience!
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George Coldham @george.coldham.com.au · 12/12/2024
Oh I see what you mean, how disappointing, but surely it will be someone super cool and awesome!
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George Coldham @george.coldham.com.au · 12/12/2024
Did they unlock the domain for handles?
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George Coldham @george.coldham.com.au · 12/12/2024
Conditional access policies are one of the most powerful tools to secure your cloud and hybrid identities. They need to be reviewed and the documentation is regularly updated with contemporary guidance. Check it out! learn.microsoft.com/en-us/entra/...
learn.microsoft.com
What is Conditional Access in Microsoft Entra ID? - Microsoft Entra ID
Conditional Access is the Zero Trust policy engine at the heart of the new identity-driven control plane.
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George Coldham @george.coldham.com.au · 10/12/2024
My hair is nice and long. And I'm kind and want to do good in the world.
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George Coldham @george.coldham.com.au · 10/12/2024
This is cool as hell! I'd end up with a flat wasteland with an occasional rock here and there.
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Reposted by George Coldham
GitHub @github.com · 10/12/2024
As you’re multitasking trying to get your homes decorated and your code written, did you know that GitHub Copilot is joining you? You can edit multiple files at once with GitHub Copilot! Learn how: code.visualstudio.com/docs/copilot...
code.visualstudio.com
Copilot Edits
Get started with Copilot Edits to start an AI-powered code editing session across multiple files in your project.
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