JavaGuide

Least-privilege permissions

• Index only tagged releases and specific commit SHAs; never auto-consume main branch or PRs to prevent injection of malicious examples into training data.
• Restrict agent read access to documentation only—disable write/push capabilities and require human approval before any content updates feed downstream systems.
• Use separate API tokens with minimal scopes for agent-to-GitHub integration; rotate quarterly and revoke immediately if account shows unusual activity.

Network isolation

• Fetch content from GitHub over HTTPS with certificate pinning; validate checksums of cloned repos against a maintained manifest.
• Isolate the indexing pipeline in a sandboxed environment separate from production inference; air-gap content processing from live agent deployment.
• Whitelist only canonical GitHub URLs and block redirects; monitor for DNS hijacking or man-in-the-middle attempts on dependency fetch operations.

Monitoring

• Log all agent queries against JavaGuide content with timestamps, user context, and which specific sections were retrieved—track deviations from expected usage patterns.
• Alert on suspicious PR/contribution activity to the repo (e.g., commits changing security-sensitive examples, deprecated library recommendations, or API patterns).
• Version-lock all indexed content and maintain audit trails when content is updated; flag if agents begin citing examples from unapproved or experimental commits.

Red flags to watch for

• Sudden shifts in agent responses recommending insecure patterns (hardcoded credentials, disabled SSL verification, obsolete crypto) not present in current release—indicates injection or poisoning.
• Requests querying the same edge-case topic repeatedly with slight prompt variations—classic probing for prompt injection vulnerabilities in the indexing layer.
• Unexpected pull requests introducing "fixes" to security guidance or adding new "best practice" sections; validate against upstream security advisories before merging.