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Cybersecurity

Your gym website just got hacked by someone who wasn't trying to hack it

OrionX Team10 August 20264 min read

A man in Melbourne wanted a spot in a gym class. He asked his AI assistant, OpenClaw, to book it for him. The assistant found a weakness in the gym's booking site, worked around the restrictions, and knocked someone off the waiting list so its owner could move up a place.

ABC News is reporting it as the first known Australian case of an AI agent hacking a system on its own.

Fair enough. But the framing bothers me, and not for the reason you'd expect.

The AI didn't get clever. The bar got lower.

We don't know the exact flaw yet. If I had to bet, it's the most ordinary thing in the world.

Most booking sites work like a well-mannered doorman. The screen hides the buttons you're not allowed to press. Class full, so the button greys out. Already booked, so the option disappears. What almost nobody checks is whether the system behind that screen would have actually said no if you'd walked past the doorman and asked it directly.

Usually it doesn't. It just does what it's told.

There's a name for this. Security people call it broken access control, and it's been the single most common serious flaw in web software for years. It's the first thing anyone testing a website looks for. Write that phrase down, because it's the question to put to whoever built your site.

So no, I don't think an AI discovered something clever here. Someone paid to test that site would have found the same hole in an afternoon.

What changed is who's holding the crowbar, and whether they even know they're holding one.

This is the pattern we described when writing about JADEPUFFER, the first AI-run ransomware attack. The techniques weren't new. A 2021 CVE and a default password. What changed was that the effort of exploiting them collapsed to near zero.

"Who'd bother hacking us?"

Every small business I've done security work for has said some version of this. A gym in Melbourne. An accounting practice in Adelaide with four staff and a client portal nobody's looked at since 2019.

Honestly? For twenty years it was a reasonable bet. Attackers have limited hours in the day and they go where the money is. Being small and boring was never really protection, but it did the job of protection.

That bet is now off.

The man in this story wasn't an attacker. He wanted a class. The effort cost him one sentence typed into a chat window. His assistant did the poking around and the booking, and it did it because being helpful was the instruction it was given.

Now multiply that by every person quietly running one of these assistants. Your booking system and your customer portal are going to get tried by software with infinite patience and no sense that a spot might belong to somebody else.

This is the same dynamic we flagged in Your AI Agent Has Admin Rights: the agent wasn't malicious. The access it was handed was the problem.

Nobody's at fault, which is worse

Here's the part I keep chewing on.

The man didn't ask it to break anything. The assistant had no bad intent in any sense a court would recognise. The gym had a bug. Australian computer laws generally hinge on a person knowing their access was unauthorised, and I don't think anyone involved knew that.

So the harm is real, because somebody lost their spot, and the blame sits nowhere at all. That's an uncomfortable place to be if you run a business that strangers can reach through a website.

What I'd actually do about it

Ask your developer one question: if someone skips the screen and talks to the system directly, does it still check they're allowed? If the answer is vague, that's your answer. Fixing it is usually an hour of work, and it usually doesn't get done because nothing has gone wrong yet.

Then make sure someone is keeping records of who's using the site and when. Not because it stops anyone, but because this kind of traffic looks odd, and you want to be able to see it. Activity at three in the morning. Patterns nobody would click through by hand.

And get the actual rules of your business tested, not just the software underneath. There's an automated tool for telling you your software is out of date, and every web company runs one. There is no automated tool that tells you a stranger can cancel a customer's booking by changing one number in a web address. That gap is exactly where this story lives.

The honest version

This incident doesn't matter much on its own. One gym, one class, one irritated person who lost their booking.

But it's the first one we heard about, and it happened by accident, over a fitness class, because somebody couldn't be bothered opening a browser. The deliberate ones are coming, and they won't arrive with this kind of comic framing.

If you run anything customers log into and nobody has ever sat down and deliberately tried to break it, that's the thing to sort out this quarter. We do this work at OrionX, mostly for Australian businesses who'd rather find their own gaps than have someone's gym-booking assistant find them first. Us or anyone else, it doesn't much matter. Get it tested.

Your website doesn't need to be interesting to attackers anymore. It just needs to be in the way.


Source: ABC News, 10 August 2026

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