gavinj.net

Thoughts on technology, infrastructure, and AI

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20 posts found

On the Grid: BSides Canberra 2026

September 26, 2026 • security, bsides, canberra

Three days at BSides Canberra 2026: AI-driven vulnerability research, a no-AI CTF, a Tron-themed Black Bag challenge, and a proud dad moment at the soldering iron.

Flipper Zero with Momentum: A Review Before BSides Canberra

September 18, 2026 • security, flipper-zero, momentum

Getting ready for BSides Canberra with the original Flipper Zero: my experience with Momentum, RF remotes, NFC, USB tools and the iOS app, plus Wi-Fi, Ethernet and the upcoming Flipper One.

Heretic Models: An Uncomfortable Rabbit Hole on a DGX Spark

September 16, 2026 • ai, llm, local-ai

A DGX Spark with 128GB of unified memory let me explore much larger local models. Then I discovered Heretic variants, and a hardware experiment became a rather uncomfortable lesson in how AI refusals work, how easily they can be changed, and what that means for the rest of us.

One Jump Box, Many Users: Multi-User RDP on Ubuntu 26.04

September 3, 2026 • homelab, linux, ubuntu

Part 1 of building a hardened multi-user jump host: why the Essential Eight pushes you towards one, and how to get xrdp serving concurrent sessions on Wayland-native Ubuntu 26.04.

The eggplant in the address bar: what an emoji subdomain taught me about the modern web

August 28, 2026 • emoji, dns, idn

My friend Rob registered 🍆.prawnburrito.com, pointed it at my blog, and gave me a reason to look at how emoji domains work, where they break, and why the standards bodies quietly wish people would stop.

gav.ilicio.us

Crafting Apps: open-source creative tools
A vibe-coded Adobe suite written in Rust, cross-platform with GPU acceleration. I am going to have to give these a try.
GPT-6 and Intelligent UI for everyone
OpenAI's announcement for GPT-6, rolling out across ChatGPT alongside what it calls Intelligent UI: responses that arrive with clickable buttons, forms and charts instead of plain text. The notable shift is the model composing an interface on the fly rather than just answering in prose.
'Jonathan' Is the Oldest Land Animal on Earth. He Could Hold the Secrets to Defying Death
404 Media visits Jonathan, the Seychelles giant tortoise who has lived on St Helena since 1882 and was already mature when he arrived, putting his age at around 190 years. The piece looks at what researchers hope a creature that has outlived every human record can tell us about longevity.
BIGWORDS.PAGE: Turn any screen into a sign
Type a message and it fills the entire screen of whatever device you point at it: phone, tablet or TV. Pitched for welcome signs, timers and Wi-Fi passwords, with no app, no account and no cost. The kind of single-purpose web tool that earns its bookmark.
Hacking This BYD Was Too Easy
Four Corners finds a passwordless way into the BYD Shark 6, then remotely plays with its lights, locks, wipers, speakers and microphone. Damn it—this was going to be my next car.
neat-annotations: Hand-drawn CSS annotations
Hand-drawn arrows and handwritten callouts for the web, all in one CSS file. No JavaScript, no build step—just a little personality for your page.
Telstra Outage: The Night a Network Decided the Year Was 2006
One bad GPS clock, one NTP timing loop, and Telstra's network thought it was 2006. Certs, DNS, time—the sysadmin trifecta strikes again, with time taking the lead.
Bonsai 2 27B
Another model for the local-AI shortlist: PrismML says ternary weights shrink Qwen3.8 27B to 5.9 GB while retaining 98.2% of its benchmark score.
My AI Agent That Loves to Talk to Scammers
Scammers have AI callers now, so Paul Nevin built an AI honeypot to keep them talking and map their playbook. Some things never change—only the tools.
fugleramme: E-Ink Bird Frame for Raspberry Pi
A Raspberry Pi identifies garden birds by sound using local AI, then displays them on e-ink as hand-cut 19th-century illustrations. Delightful.