Sat 10 Oct · 10:15am
Darling Square Library · Haymarket
Event Infowhatson.cityofsydney.nsw.gov.au Ask your mates if they’re keenGet a link for the group chat · no app neededYour crew, sorted
See which mates are free for this, minus the group chat roll call.
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For this MeetUp, we are running an interactive Cybersecurity Capture The Flag (CTF) competition.
Your mission: discover bots communicating over a virtual MQTT network, intercept and decode their encrypted messages, and interact with the final bot to claim victory.
Tech Stack: You can use any programming language supported by MQTT.
AI Tooling: AI assistance (e.g., ChatGPT, Claude, GitHub Copilot) is encouraged to help you solve challenges along the way!
We will also have free swag courtesy of Major League Hacking Hacktoberfest.
Quick answers
When is Hacktoberfest Meetup Sydney x Code For Sydney?
Sat 10 Oct 2026, 10:15am.
Where is it?
Darling Square Library, Haymarket, NSW.
How much is it?
It is free.
Where do I find out more?
On whatson.cityofsydney.nsw.gov.au. The button at the top of this page goes straight there.
How do I find out which of my mates are keen?
Tap "Ask your mates if they're keen" on this page. You get one link for the group chat, and your mates answer keen, maybe or can't in their browser, with no app and no sign-up. It is free.
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Plan it on Keen
Keen is how mates lock in plans: see who’s free, who’s keen, and actually make it happen.
