sandboxing

Implement fail-secure sandboxing with namespaces, seccomp filters, and resource limits.

3|1|Updated Dec 3, 2025

Search Tags:#namespaces #sandboxing #seccomp #untrusted code #resource limits #capability dropping #CWE-693

Ready to run

npx skills add https://github.com/Probably-Group/Dev-AID --skill sandboxing-probably-group

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: sandboxing
Source: https://github.com/Probably-Group/Dev-AID/tree/main/.dev-aid/skills/expert/sandboxing
Command: npx skills add https://github.com/Probably-Group/Dev-AID --skill sandboxing-probably-group

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Sandboxing protects hosts and sensitive environments from untrusted or potentially malicious code by enforcing strict isolation boundaries and fail-secure behavior.

Core Features & Use Cases

Least-Privilege Setup: Drop capabilities and run with minimal permissions to reduce privilege escalation risk.
Defense-in-Depth Containment: Combine namespaces, seccomp filters, capabilities dropping, and resource limits to reduce sandbox escape likelihood.
Fail-Secure Execution: Abort execution if sandbox setup fails to prevent unsandboxed fallback.

Quick Start

Use the sandboxing skill to harden an execution path for untrusted code by generating a multi-layer sandbox design that applies namespace isolation, a restrictive seccomp policy, dropped capabilities, and strict resource limits while aborting on setup failure.

Frequently Asked Questions about sandboxing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I sandbox untrusted code safely on Linux?▼

Sandbox untrusted code on Linux by combining namespace isolation, restrictive seccomp filters, capability dropping, and strict resource limits to enforce fail-secure isolation boundaries and minimize privileges.

What is the best way to prevent sandbox escape when running untrusted code?▼

The best way to prevent sandbox escape is applying layered isolation: combining namespaces, seccomp policies, dropped capabilities, and resource limits. This defense-in-depth strategy reduces escape likelihood and mitigates potential DoS attacks.

Does process containment work across Linux, macOS, and WebAssembly?▼

Process containment patterns apply across Linux, macOS, and WebAssembly. The sandboxing approach designs secure escape-resistant runtime environments by enforcing isolation boundaries and minimizing privileges on each platform.

How do I configure seccomp filters and capability dropping for application sandboxing?▼

Configure seccomp filters and capability dropping by generating a multi-layer sandbox design that applies restrictive syscall filtering and least-privilege setup. This reduces privilege escalation risk by running with minimal permissions.

Why should sandbox setup fail securely and abort execution?▼

Sandbox setup must fail securely and abort execution to prevent unsandboxed fallback. If isolation boundary enforcement fails, continuing to run untrusted code without strict containment exposes the host to escape attempts.

What resource limits do I need to mitigate DoS attacks in a sandboxed environment?▼

Resource limits mitigate DoS attacks in a sandboxed environment by constraining untrusted code execution. Combined with input validation at boundaries, these limits prevent malicious processes from exhausting host resources or attempting escapes.