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Card 493 of 10002026-09-05 issue

Observed arrival · 2026-09-05

.mdSiren — Document Security for AI

mdsiren.com Observed source
Editorial interest 78/100 Selection signal · not a rating of the site

A coming-soon workspace that checks outside documents for prompt-injection signals and other machine-readable risks before they enter an AI workflow.

Landing page captured for the 2026-09-05 issue.

Field notes

The proposed system separates a document’s visible page from its machine-readable layer, then routes the exact supplied version to Approved, Needs review, or Quarantine. Its checks include prompt-injection signals, hidden or instruction-like content, supported sensitive-information patterns, and links or active document surfaces. Approved versions are intended to retain their scan records in a private Library; the site says changed files require a new check, while policy changes may require a rescan.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

OpenPublic substance visible
PrettyNotable craft visible
ProPolished or operationally mature
NicheUnusually specific use
ƒJavaScriptBrowser-side code central

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mdsiren.com

Landing page observed 2026-09-05. The live site may have changed.