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I ditched OpenClaw and built a more secure AI agent (Blink and Mac Mini)

https://coder.com/blog/why-i-ditched-openclaw-and-built-a-more-secure-ai-agent-on-blink-mac-mini
35•ericpaulsen•1h ago

Comments

ericpaulsen•1h ago
OpenClaw proved demand for personal AI agents on your own hardware, but its default config listens on all network interfaces. Thousands of instances were found exposed. I spent a weekend building an alternative using Blink (OSS agent orchestration), Tailscale (WireGuard-based private networking), and a Mac Mini M4. Two isolated agents, no public exposure, built-in UI, ~10W idle power draw.
charcircuit•34m ago
>but its default config listens on all network interfaces

The default config listens on only localhost which is why it tells you to forward the port using ssh to your own machine to access it from a different machine.

TZubiri•28m ago
Don't most ISP routers block ports unless you port forward them though?

I wouldn't say that the vulnerability in that case was in OpenClaw, but with the router, nowadays it's expected that ports are blocked unless explicitly allowed in the router.

sneak•31m ago
OpenClaw is not insecure because it has ports open to the internet. This is an easily solved problem in one line of code (if indeed it even has that bug, which I don’t think it does). Furthermore you’re probably behind NAT.

OpenClaw, as well as the author’s solution, is insecure because it sends the full content of all of your private documents and data to a remote inference API which is logging everything forever (and is legally obligated to provide it to DHS/ICE/FBI/et al without a warrant or probable cause). Better engineering of the agent framework will not solve this. Only better models and asstons of local VRAM will solve this.

You still then have the “agent flipped out and emailed a hallucinated suicide note to all my coworkers and then formatted my drives” problem but that’s less of a real risk and one most people are willing to accept. Frontier models are pretty famously well-behaved these days 99.9% of the time and the utility provided is well worth the 0.1% risk to most people.

Tepix•28m ago
It‘s not just that - but I complete agree on not using a Personal AI assistant with some cloud service LLM provider.

Anyway, by interacting with the world, the LLM can be manipulated or even hacked by the data it encounters.

TZubiri•23m ago
Have you used OpenClaw?

My experience has been that it doesn't take input from the world, unless you explicitly ask it to. But I guess that isn't too crazy, if you ask it to look at a website, maybe the website has a hidden prompt.

I guess that's more of a responsibility of the LLM model in the security model.

That said, I don't think the main dev is serious about security, I've listened to the whole Lex Friedman interview, and he talks about wanting to focus on security, but still dismissing security concerns whenever the arise as coming from 'haters', and there's no recognition of insecurity being possibly an inseparable tradeoff of the functional specifications of the product, I think he thinks of security as something you can slap on a product, which is a very basic misconception I see often in developers that get pwned and managers that think of security as a lever they can turn up or down through budget.

mentalgear•11m ago
LLMs famously can't separate data from commands (what you mean by input) - that's one of their core security issues. Check simonw's lethal trifacta. Agreed on all the other points !
PurpleRamen•27m ago
Isn't the wasteful sending of every data and their mother the reason why OpenClaw is so useful for many people? I heard something about excessively big context-windows on every single request. So making it more secure, while still using remote LLMs, would mean making it less useful?
cosmic_cheese•19m ago
Yeah, I find the whole concept a bit of a nonstarter until models that I can run on a single somewhat-normal-consumerish machine (e.g. a Mac Studio) with decent capability and speed have appeared. I’m not interested in sending literally everything across the wire to somebody else’s computers, and unless the AI bubble pops and cheap GPUs start raining down on us I’m not interested in building some ridiculous tower/rackmount thing to facilitate it either.
strongpigeon•28m ago
For those interested, you can get the base config Mac Mini (in the US) for $400 from Micro Center [0]. They don’t seem to ship to where I live, but BestBuy was happy to price match in the support chat.

Just received mine and planned on experimenting with something like OP this weekend.

[0] https://www.microcenter.com/product/688173/apple-mac-mini-mu...

bko•15m ago
I understand the need for a dedicated box, but any reason you shouldn't just use a server? What would someone recommend for cloud on something like Hetzner?

https://www.hetzner.com/cloud/

embedding-shape•5m ago
In fact, seems much better you'd host something like that outside your own personal network. Given people are getting new hardware for it for "isolation", probably running it somewhere else completely would be better?

I still don't understand why people don't just run it in a VM and separate VLAN instead.

renewiltord•5m ago
For me it was access to Apple ecosystem of things. I used vps but it had to contact my http for reminders and iMessage etc. much nicer in Mac mini. It works better.
cheema33•13m ago
How is it better than a $3/month VPS that you can easily wipe and restart as needed?
kylecazar•7m ago
I normally wouldn't reply with something like this... but a satirical YT short came up yesterday, and it was too fitting to not share.

https://youtube.com/shorts/bof8TkZkr1I?si=FeMBYGn-d5Du-GAU

slopusila•7m ago
from the creator of openclaw - a lot of websites block/rate-limit non-residential IPs

driving a browser in the cloud is also a bit of work

but you could put a proxy on your residential machine

blibble•28m ago
"more secure AI agent" is like "most secure version of Windows yet"
suhputt•24m ago
so, ignoring the the fact that you yourself didn't actually write this (based on commit history), and the fact that your claims about better security are dubious at best, the most interesting thing I find about this whole situation is - how did you get this to the hackernews front page so fast?

that's the real (not-so) secret sauce here :)

rob•11m ago
[delayed]
embedding-shape•6m ago
> how did you get this to the hackernews front page so fast?

Fast? Posted one hour ago. Presumably as every other submission, other users found it interesting and/or wanted more discussions around it.

sn0n•20m ago
Yay more AI slop content… it’s comforting how they all read the same, no matter the topic.
croes•20m ago
Strange that security still isn’t a firs class feature when something new is developed.

I'm slowly beginning to doubt that people can learn from the mistakes of others. Why do we keep making the same mistakes over and over again?

skrebbel•9m ago
Fwiw the sensibilities of the --yolo AI-maximizing "I vibe coded a Hospital Information System this afternoon" crowd isn't really representative for the greater dev community I think
mentalgear•18m ago
I also started on a similar quest to build an ai agent using LLMs ... and quickly had to throw about 80% of the code away because it was just unreadable and unsecure, based on flawed assumptions the LLM made in its blackbox. So I definitely won't trust something someone vibe-coded run on my computer.
makeitcount00•13m ago
This article fails to mention the bigger security issue with openclaw/anything else like this is prompt injection, not exposed network ports.

Isolating it from incoming requests is better than not, but does nothing to prevent data exfiltration via outgoing requests after being prompted to do so by a malicious email or webpage that it is reading as part of a task you've given it.

franze•10m ago
i'm running claude code on a server in yolo mode - ssh via tailscale

yeah, openclaw is tue more user friendly product (whatsapp bridge, chat interface) bit otherwise at the core they are the same.

i did run moltbook for half a week - it crunched through my claude code pro token allowance in that time. needed to put claw to sleep again after that. needed some work to do.

stavros•6m ago
There's a big security issue with OpenClaw, and it won't be fixed with network/filesystem sandvoxes. I've been thinking about what a very secure LLM agent would look like, and I've made a proof of concept where each tool is sandboxed in its own container, the LLM can call but not edit the code, the LLM doesn't have access to secrets, etc.

You can't solve prompt injection now, for things like "delete all your emails", but you can minimize the damage by making the agent physically unable to perform unsanctioned actions.

I still want the agent to be able to largely upgrade itself, but this should be behind unskippable confirmation prompts.

Does anyone know anything like this, so I don't have to build it?

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