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Security feedback: SSH hardening and policy validation #7

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Description

@pimlock

Context

Security hardening work is required to improve SSH and policy enforcement safeguards.

Requested work

  • Further harden ssh security
  • Fine-tune seccomp policies.
  • Enforce mTLS certificate validation.
  • Add checks to verify setgid and setuid calls succeed.
  • Add policy validation to ensure corrupted or maliciously modified policies do not cause unsafe behavior.

Definition of done

  • Security hardening changes are implemented and validated.
  • Failure modes are explicit, with safe defaults when validation fails.
  • Tests or checks cover the new validation and enforcement paths.

Originally by @drew on 2026-02-12T17:58:51.059-08:00

Activity

  1. added this to the march-mvp milestone on Feb 27, 2026
  2. pimlock commented on Feb 27, 2026

    @pimlock
    CollaboratorAuthor

    Additional security review here, https://docs.google.com/document/d/1BpszyWkTepMN5DRaraA9AWQKgfdBqINUBpVRbLmlSeU/edit?tab=t.0.

    This document should be broken up into tickets.


    Originally by @drew on 2026-02-19T08:23:28.602-08:00

  3. drew commented on Mar 4, 2026

    @drew
    Collaborator

    This ticket is duplicated by other more specific tickets. Closing this in favor of the others.

  4. added a commit that references this issue on Apr 3, 2026
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