· 11 min read
QR Codes and the Trust Around Them
QR codes are just data. From parking payments to passkeys, the security question is what we trust them to do, and why we trust the context around them.
Read the articleGeorge Coldham · Perth, Australia
Security, AI,
and the humans
in between.
I’m George Coldham. I work at the intersection of Security and AI in the Microsoft ecosystem — threat protection, identity, browser/session control planes, and the messy reality of how data leaks without malware. I speak at conferences and organise community events to help security professionals level up together.
03Oct 2026
Next on stage · DDD Perth 2026
Authentication for humans, why passkeys finally make sense.
Optus Stadium, Perth · View the session
Notes from the real world
A few things worth sharing.
· 9 min read
When Your Management Plane Becomes the Attack Surface
How the March 2026 Stryker incident shows that identity and admin control planes, not malware, are now the primary enterprise attack surface.
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· 14 min read
A Practical Microsoft 365 Security Baseline for 2026
A simple baseline of Microsoft 365 security controls that reduce common breach paths like business email compromise and identity takeover.
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