Observed arrival · 2026-09-01
trust.band — Provenance as a defense against prompt injection
A security layer for AI agents that records where arguments came from before allowing them to reach an action.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
The system assigns arriving values to four provenance bands: SESSION, TOOL, USER, and a policy layer that agents cannot influence. Derived values inherit the lower band's trust, preventing content from upgrading itself through an intermediate step. The page reports a 0.082 ms p50 decision latency and publishes AgentDojo results, including 22 of 105 successful Slack attacks under trust.band versus 46 of 105 undefended.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue