From header contains Unicode tag characters (U+E00xx) — ASCII smuggling / prompt injection
from-unicode-tag-chars
What this tier means
High-confidence threat indicator — phishing, impersonation, BEC, or scam pattern. Strong contributor to the trash decision.
How Gorganizer detects this
The From header contains Unicode tag characters (U+E0020..U+E007F). Attackers embed them in the display name portion of the sender — `"Support\u{E0069}\u{E0067}\u{E006E}\u{E006F}\u{E0072}\u{E0065}" <spam@evil>` — so that an AI classifier reading `From: ${email.from}` sees smuggled instructions while the user sees a clean "Support" label. Third sibling of `body-unicode-tag-chars` and `subject-unicode-tag-chars`, covering the last of the three fields that `sanitizeAiInput` scrubs. Same detection regex, same +5 weight, same single-occurrence threshold — legit email never contains tag chars in the From header.
False-positive guard
Every signal in Gorganizer feeds a multi-module score — never a sole verdict. This is a threat-tier signal — it adds a strong contribution to the trash score. The full pipeline still requires convergence across multiple modules + a margin over the safety floor before deletion happens, and Gmail's trash (30-day recovery) is always used — never permanent delete.
About the scoring engine
Gorganizer's scoring engine emits 2,143+ signals across six modules — headers, sender, subject, body, attachments, and structural metadata. Every email is scored by every module independently; the final verdict requires multiple modules to agree and the trash score to beat the safety floor by a margin.
Sacred safety guards — never delete starred emails, replies, calendar invites, receipts/invoices, or attachments — apply unconditionally regardless of any signal.
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