Let's discuss sandbox isolation
A dive into the spectrum of sandboxing and isolation, from Linux namespaces and gVisor to hardware-enforced microVMs and WebAssembly, and why picking the right boundary matters for multi-tenant workloads.
There is a lot of energy right now around sandboxing untrusted code. AI agents generating and executing code, multi-tenant platforms running customer scripts, RL training pipelines evaluating model outputs—basically, you have code you did not write, and you need to run it without letting it compromise the host, other tenants, or itself in unexpected ways. The word "isolation" gets used loosely. A Docker container is "isolated." A microVM is "isolated." A WebAssembly module is "isolated." But these are fundamentally different things, with different boundaries, different attack surfaces, and dif
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related reading
- Sandboxing JavaScript Code — Andrew Healeyhealeycodes.com
- The Container Security Platform - gVisorgvisor.dev
- What Are Namespaces and cgroups, and How Do They Work? – NGINX Community Blogblog.nginx.org
- What is an AI code sandbox?modal.com
- A basic systems architecture for AI agents that do autonomous research — LessWronglesswrong.com
- Vercel Sandboxvercel.com
- Hidden Technical Debt of AI Systems: Agent Runtimeleehanchung.github.io
- Learning Containers From The Bottom Upiximiuz.com
- Optimizing seccomp usage in gVisor - gVisorgvisor.dev
- GitHub - jackyzha0/docker-explained: 🐋 wtf is docker and why is everyone talking about itgithub.com
- systemd service sandboxing and security hardening 101 | Ctrl blogctrl.blog
- Tiered Trust for Useful Embedded Systems Securitytockos.org