Sources
Who to call. What this is.
Operational briefing compiled from public research. Not an official xAI document. Status claims are as reported through August 2026.
Inside xAI
Security
Vulnerability remediation
Engineering
Agentic browsing harness and Build client
Legal / Privacy
Indexed chats, retention, deletion commitments
Bug bounty
HackerOne / xAI intake
Researchers
Adversa AI
CCI researchers
HackerOne / xAI
Bug bounty
Guardio Labs
Trusted-surface abuse on X
cereblab analysis
Build upload wire capture
wetlink hardening
verify.sh / harden.sh
SENTINEL is a Metatron field manual. Use it to close the list — not to decorate a slide. The window for action is narrow. The exposure is real. The solution is clear. Gate tool calls, tag provenance, add egress boundaries, make share links temporary, and set a local hard veto on codebase upload.