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  1. 3970cf8 Refactor building of startup information. by Alex Gough · 20 hours ago master
  2. edcc262 Update Speech Recognition Windows Sandbox by Evan Liu · 5 days ago
  3. 2e24d74 Move SODA path retrieval to the browser process by evliu · 6 days ago
  4. 15204de Rewrite is_linux flag for sandbox, servicse, ski and testing directories. by Sean McAllister · 6 days ago
  5. 470194e Further cleanup of OS_MACOSX in sandbox by Avi Drissman · 6 days ago

Sandbox Library

This directory contains platform-specific sandboxing libraries. Sandboxing is a technique that can improve the security of an application by separating untrustworthy code (or code that handles untrustworthy data) and restricting its privileges and capabilities.

Each platform relies on the operating system's process primitive to isolate code into distinct security principals, and platform-specific technologies are used to implement the privilege reduction. At a high-level:

  • mac/ uses the Seatbelt sandbox. See the detailed design for more.
  • linux/ uses namespaces and Seccomp-BPF. See the detailed design for more.
  • win/ uses a combination of restricted tokens, distinct job objects, alternate desktops, and integrity levels. See the detailed design for more.

Built on top of the low-level sandboxing library is the //sandbox/policy component, which provides concrete policies and helper utilities for sandboxing specific Chromium processes and services. The core sandbox library cannot depend on the policy component.