🔄 Topic

I deliberately expanded my local agent’s write access in stages — one folder, then one repo, then the filesystem with recoverable tasks — and fixed its website audits so they can no longer assert findings they did not verify.

🎯 Goal

Give the local agent enough scope to be genuinely useful, without skipping the least-privilege thinking: each expansion justified, staged, and reversible.

🛠 What I Did

I treated the agent’s permissions like a real access review.

Main areas covered:

  • started from the original boundary: write access limited to a single operations/ folder
  • expanded to the whole WebCheckup repo once the agent live-proved it could execute a real documented task
  • later added recoverable full-filesystem tasks, with the sandbox-staging pattern so changes land somewhere undoable first
  • routed public website audits through the local agent and through the AI-OS orchestrator instead of ad-hoc runs
  • fixed the audit behavior so it stops asserting unverified findings — a check that did not run can no longer appear as a conclusion
  • wrote runner guidance: which task families belong to the local agent and which escalate

🔗 Key Cybersecurity Connections

This is privilege escalation done as governance instead of as an accident. Each scope increase followed the same pattern a good access request follows: demonstrated need, demonstrated competence, staged rollout, recovery path.

The unverified-findings fix is the other half: capability without epistemic discipline is dangerous. An agent that writes files and states unchecked conclusions is a liability in both directions.

🔍 Investigation Questions

  • What evidence justified each scope expansion?
  • Can every agent write be reverted?
  • Does the staging pattern actually catch bad changes before they land?
  • Can an audit finding exist without a corresponding executed check?
  • Which task families are still explicitly out of scope?

🚨 Detection Opportunities

Checks for an agent with growing scope:

  • write outside the currently approved boundary
  • change landed directly without passing staging
  • audit output containing findings with no matching check log
  • scope expanded with no recorded justification
  • recoverable-task rollback failing when tested

Example:

project=local-agent-scope
signal=write_outside_approved_boundary
risk_area=privilege_creep
triage=diff_change_check_staging_log_and_scope_record

🧭 MITRE ATT&CK Techniques

Possible mappings if this pattern went wrong:

  • T1078 — Valid Accounts
  • T1565 — Data Manipulation

The staging and rollback design exists to keep mistakes recoverable.

🗺 Visual Investigation Diagram

One folder
    ↓ (live-proved task)
One repo
    ↓ (staging + recovery pattern)
Filesystem, recoverable tasks only
    ↓
Every expansion recorded
    ↓
Findings must cite executed checks

⚠ Challenges

The temptation was to jump straight to full access because staging feels slow. The discipline of “prove a task at this scope before the next scope” is what made the expansion an engineering decision instead of a gamble.

📚 What I Learned

I learned that scope expansion and claim verification are the same lesson from two sides: an agent must neither do more than approved nor claim more than checked.

➡ Next Steps

  • Test the rollback path on a real botched change, on purpose
  • Keep the scope record next to the governance docs
  • Audit periodically for writes that bypassed staging
  • Hold the no-check-no-claim rule as non-negotiable

🧠 Reflection

Watching my own agent earn access the way an employee would — task by task, with a paper trail — made least privilege feel practical instead of theoretical.

🧩 Lessons Learned

What worked

Staged expansion gated on live-proved tasks.

What broke

Audit output that asserted findings no check had verified.

Why it broke

The report template spoke more confidently than the checks behind it.

Fix / takeaway

Bind every asserted finding to an executed, logged check — and bind every permission to a demonstrated need.

📈 Skill Progression Context

This supports my cybersecurity progression because access reviews, staged privilege grants, and evidence-bound reporting are daily mechanics of real security operations.

😄 TL;DR

The agent earned wider access in stages, and its reports lost the right to guess.