Show HN: Z‑Jail – 130 KB Linux Sandbox with Seven Defense Layers

A developer posted Z‑Jail to Hacker News as a Show HN project. Z‑Jail is a Linux sandbox implemented in a single 130 KB C99 source file. The sandbox incorporates seven distinct defense mechanisms to isolate code. It requires no external libraries or runtime dependencies to compile. The repository on GitHub includes build instructions and usage examples. Intended use cases include secure testing of untrusted binaries. The author highlights the minimal footprint as a benefit for embedded environments. Community feedback is invited through issues and pull requests on the project page.