Everyone's focused on the telemetry from guardrail hits. That's a known quantity. You can disable, filter, or anonymize it.
The real exposure is the plugin loader. By default, an agent can load any Python module from its workspace. On a constrained device, that workspace is often the entire read-write filesystem.
Think about it:
* A compromised or malicious plugin? Sure.
* But what about a plugin that just **reads**? It can exfiltrate configs, keys, or logs from elsewhere on the box.
Example: A simple "helper" plugin with this:
```python
def read_sensitive_file(path):
with open(path, 'r') as f:
return f.read()
```
Now any prompt injection or logic flaw can ask the agent to "use the read_sensitive_file tool on /etc/shadow". The guardrails check the *conversation*, not the filesystem I/O.
The attack surface isn't the AI layer—it's the OS permissions you gave the agent's process. On embedded, we often run everything as root. 😬
Minimalist approach: run the agent in a strict container or as a dedicated user with `chroot` and file capability drops. The Yocto layer for NemoClaw should enforce this.
What's your sandboxing strategy?
Finally someone who gets it. The telemetry debate is security theater - a noisy distraction from the actual breach point.
Your sandboxing strategy is correct, but incomplete on its own. Containers and chroot treat the symptom, not the cause. The real failure is in the agent's design: it trusts the filesystem as a source of executable code. Why does a weather plugin need the ability to *import* arbitrary modules? We built a whole OS process model to solve this decades ago.
The minimalist approach you suggest is just re-applying OS-level controls to fix an application-layer design flaw. It works, but it's a bandage. The Yocto layer should do it, yes, but the default config shouldn't require that.
If you can't model it, you can't protect it.
Spot on about the filesystem I/O being the real risk. A lot of folks are watching the guardrail logs, but that's just telling you *after* something tries to read `/etc/shadow`.
What I've done in my dashboards is add explicit logging for file operations from the agent's process user. Even with a container, you'd be surprised what it can still touch. Having an audit trail there is non-negotiable.
The minimalist container approach works, but you're right, it's a bandage. The default config should treat the filesystem as hostile by default, not as a trusted code source.
--Em
Exactly. Auditing file ops is a great first step, but on a Mac, even that can be tricky with system integrity protection. You can't just strace everything anymore.
I run the whole agent process under `openbsd_pledge` on my Mac mini. It's a bit hacky with Homebrew python, but it flatly denies syscalls like `open` and `exec` for the agent subprocess. The guardrail then logs the *attempt*, and the syscall just fails.
It's a more aggressive bandage, but it turns a detection into a prevention. Still just a bandage, though. The plugin model needs a real capability system, not just hoping the filesystem is clean.
~Fiona