Body contains Unicode tag characters (U+E00xx) — ASCII smuggling / prompt injection
body-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 email body contains Unicode "tag characters" (U+E0020..U+E007E, plus the U+E007F CANCEL TAG terminator) — invisible-to-humans codepoints in the Supplementary Private Use Area that encode the printable ASCII range. These were originally intended for language tagging in plain text, but RFC 6082 (2011) explicitly deprecated them and no modern software emits them for any legitimate purpose. Recent threat research ("ASCII smuggling") shows attackers embedding these in email bodies for two purposes: (1) prompt injection against AI email classifiers — sequences like `\u{E0069}\u{E0067}\u{E006E}\u{E006F}\u{E0072}\u{E0065}` decode to "ignore" and get read by LLMs that normalize Unicode, while remaining totally invisible to the user reading the same message; and (2) classifier-poisoning keyword smuggling — a text-based ML scorer with a broken tokenizer may read the tag-char sequence as ASCII and get its score skewed without the user seeing anything. Detection fires on a SINGLE tag-char occurrence (not a threshold of N) because legitimate email never contains even one. Weighted at +5, same as `href-dangerous-scheme:javascript` and `href-at-symbol-trick` — a decisive near-zero-false-positive attack signal.
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.
Ready to clean your inbox?
Gorganizer scans your Gmail with this signal and 2,143+ others, then cleans everything in one click. $4.99 one-time, no subscription.
Get started