emilburzo's comments

On: AirPods 5

[emilburzo]

If microphone quality matters a lot for your use-case, you might also want to checkout the Anker Soundcore Libery 5 Pro.

(I'm only sharing this because I know how difficult it is to find any information on earbuds with good microphones, Huawei Freebuds 4/5 were the best from my experiments until Anker released the ones above)

On: Civilian plane crash in New Mexico tied to military GPS blocking

[emilburzo]

I actually experienced GPS spoofing while paragliding near Ukraine, luckily in the daytime. I don't even want to imagine it at night on a rescue mission. Condolences to the occupants.

It's quite easy to say "no big deal" while calm in an office, but it's really different when you're busy flying and then there's the extra workload of trying to understand what's happening, attempting to fix it, and so on. Imagine "debug bug in production while driving a car" for a rough comparison, although I guess planes are probably better equipped for loss of GPS?

https://blog.emilburzo.com/2026/06/gps-spoofing-teleported-m...

On: GPS spoofing teleported me to Peru, mid-flight

[emilburzo]

Interesting, so the spoofing is only active during attacks? That explains the short duration.

I am wondering what changed though, since this hasn't happened before in the previous 4 years. More spoofing installations maybe? Higher radio transmitter power?

I'm also very curious, do you have any technical mitigations for this to be able to use your GPS devices? Or is it now just a fact of life?

Sorry for what you are going through.

[Max-Ganz-II → emilburzo]

> Interesting, so the spoofing is only active during attacks? That explains the short duration.

As far as I know, only during.

> I am wondering what changed though, since this hasn't happened before in the previous 4 years. More spoofing installations maybe? Higher radio transmitter power?

No clue about changes. All I can say is I never saw it when I was here last, mid-2022 for about nine months.

> I'm also very curious, do you have any technical mitigations for this to be able to use your GPS devices? Or is it now just a fact of life?

Technical mitigations? read the road signs and figure out where you are :-)

I did read about someone having trouble with scooter apps, where the app was very confused to find the scooter now in Lima.

> Sorry for what you are going through.

Thank you.

[yepyoukno → emilburzo]

> I'm also very curious, do you have any technical mitigations for this to be able to use your GPS devices

The GPS jamming is probably to confuse the missiles or drones, not the people!

On: The ways we contain Claude across products

[emilburzo]

I'm still happy with my containment setup[1][2] on linux. The only risk that I see from the article would be the "Exfiltration through an approved domain" one. But in the VM there's (by design) nothing to exfiltrate besides the source code itself, which is less valuable these days.

The major benefit for me with this setup is that the agent can do all of the dev things that I can (install packages, build/run docker images, ...) which is a way faster loop than me trying it manually and then reporting back to the agent.

[1] https://blog.emilburzo.com/2026/01/running-claude-code-dange...

[2] https://news.ycombinator.com/item?id=46690907

[dist-epoch → emilburzo]

Agent can get tricked into using a malicious library in your project, commit and push that, which you then run outside the VM.

So if you ever run the repo code outside the VM and don't review everything committed, you are still at danger.

[emilburzo → dist-epoch]

It doesn't have any credentials inside the VM though, not even for git, so it could commit but not push. And I manually review/commit/push outside of the VM since I don't want to just dump stuff without reading it first.

But good call-out if someone uses a different workflow.

On: France's aircraft carrier located in real time by Le Monde through fitness app

[emilburzo]

Yep, that looks like a paraglider circling in a thermal while being drifted due the wind.

Random tracklog example: https://www.xcontest.org/world/en/flights/detail:mattmozza/2...

(zoom in until you see circles on the track line)

On: Starlink Mini as a failover

[emilburzo]

> Romania reportedly has unlimited for 4€ but I don't know which operator.

Orange Yoxo is the only one which has actually-unlimited, all the others have a fine-print somewhere with "up to X GB/month, then bandwidth is severely throttled".

I'm using the 4.9€ plan for a mountain webcam[1] and they have been true to their word, no throttling so far.

[1] https://ignis.maramures.io/

On: What Is OAuth?

[emilburzo]

I've been happily using oauth2-proxy[1] with nginx as an extra layer of authentication to prevent situations where e.g. home-assistant had an unauthenticated RCE.

It's pretty neat since you can have one oauth instances for all virtual hosts, e.g.:

  server {
      [...]   
     
      location /oauth2/ {
          proxy_pass       http://127.0.0.1:8469;
          proxy_set_header Host                   $host;
          proxy_set_header X-Real-IP              $remote_addr;
          proxy_set_header X-Scheme               $scheme;
          proxy_set_header X-Auth-Request-Redirect $request_uri;
      }
  
      location / {
         auth_request /oauth2/auth;
         error_page 401 = /oauth2/sign_in;
  
         [...]
      }
  }

[1] https://github.com/oauth2-proxy/oauth2-proxy

On: Hacking Moltbook

[emilburzo]

> but a bug in VirtualBox is making one core run at 100% the entire time

FYI they fixed it in 7.2.6: https://github.com/VirtualBox/virtualbox/issues/356#issuecom...

On: Running Claude Code dangerously (safely)

[emilburzo]

Hmm, perhaps I'm missing something, so let's go through it step by step and see where the disconnect is:

- There's a cloned 'my-project' git repo on the base OS

- The 'Vagrantfile' is added to the project

- 'vagrant up', 'vagrant ssh' and claude login is run inside the VM

At this stage, besides the source code and the Claude Code token (after logging in), there are no other credentials on the VM: no SSH keys, no DB credentials, no API tokens, nothing.

There is also no need to add:

- SSH keys or GitHub tokens: because git push/pull is handled outside the VM

- DB credentials: because Claude can just install a DB inside the VM and run the project migrations against that isolated instance, not any shared/production database

API tokens can definitely be a problem if you need external service integration. But that's an explicit opt-in decision, you'd have to deliberately add those credentials to the Vagrantfile or sync them in. At that point, yes, you need proper token scoping and permissions.

[oofbey → emilburzo]

Integration tests are where it breaks down. Assuming Claude can just install whatever infrastructure it needs inside the VM only works for relatively simple projects. Claude probably isn’t going to install a Kafka queue in your VM. Or a k8 cluster. Maybe it could. But unless you’re in a monorepo it wouldn’t know how to configure it properly.

On: Running Claude Code dangerously (safely)

[emilburzo]

Correct, which I wanted to avoid because:

> Mounting the Docker socket grants the agent full access to your Docker daemon, which has root-level privileges on your system. The agent can start or stop any container, access volumes, and potentially escape the sandbox. Only use this option when you fully trust the code the agent is working with.

https://docs.docker.com/ai/sandboxes/advanced-config/#giving...

[ejia → emilburzo]

PM for Docker Sandboxes here.

We have an updated version of Sandboxes coming out soon that uses MicroVM isolation to solve this exact problem. This next version will let your agent access a Docker instance within the MicroVM, therefore allowing you to do this securely.