security_best_practices_report.md

Security Review Report

Executive Summary

I did not find committed live credentials, private keys, or obvious sensitive tokens in the tracked repository contents.

The main residual risks are:

1. A tracked Claude settings file exposes a local absolute filesystem path and username.
2. Ignored local SQLite databases exist in the working copy and contain runtime data, including hashed API-key material and event/session records. They are not tracked by git today, but they would be sensitive if someone force-added them or shared the repository directory as an archive.

Low Severity

LOW-01: Tracked local path leaks workstation username

Impact: Minor privacy leak. The repository exposes a developer-local absolute path that includes the local username.

• Evidence: .claude/settings.json
• Detail: The hook command embeds /home/nistrator/Documents/github/amplifier/ai_working/agent_debugger/..., which reveals the local username nistrator and local directory layout.
• Recommendation: Replace the hardcoded absolute path with a repo-relative or environment-derived path.

Informational

INFO-01: No committed secrets found in tracked files

• Evidence reviewed:
  • .env.example
  • .env.example
  • tests/test_sdk_config.py
  • tests/test_sdk_transport.py
• Notes:
  • .env.example contains placeholders such as sk-..., not live values.
  • Test files use clearly synthetic sample keys like ad_live_test123 and ad_live_test.
  • Targeted git-history searches for common secret formats did not return committed AWS keys, GitHub tokens, Slack tokens, Google API keys, JWTs, or private-key blocks.

INFO-02: Sensitive local runtime artifacts exist but are gitignored

• Evidence:
  • .gitignore
  • .gitignore
  • .gitignore
  • .gitignore
• Notes:
  • Local ignored files currently present include .coverage, traces/, dist/, and SQLite databases under data/.
  • The local data/agent_debugger.db contains tables such as api_keys, events, sessions, and checkpoints.
  • The api_keys table appears to store hashed key material, not raw keys, and sampled pattern checks did not show obvious raw bearer tokens, OpenAI-style keys, passwords, or emails in the checked database fields.

Scope and Method

• Searched tracked files for secret-related keywords and high-signal credential formats.
• Checked for tracked .env, key, certificate, and keystore-style files.
• Ran targeted git-history searches for common credential patterns.
• Reviewed ignore rules to confirm local runtime artifacts are excluded from git.
• Inspected local SQLite schemas and pattern counts without dumping record contents.

Residual Gaps

• No dedicated entropy-based secret scanner such as gitleaks or detect-secrets was installed in this environment.
• The history review was targeted to high-signal credential patterns rather than a full scanner-backed audit of every commit blob.