Skip to main content
ThreatOther

Tycoon 2FA HTML obfuscation — 50+ decimal or hex-byte array fed through String.fromCharCode to decode phishing HTML at runtime

tycoon-charcode-decimal-array-obfuscation

What this tier means

High-confidence threat indicator — phishing, impersonation, BEC, or scam pattern. Strong contributor to the trash decision.

How Gorganizer detects this

HTML body or inline script contains a JavaScript array of 50+ decimal integers (or 2-digit hex bytes) fed through String.fromCharCode / fromCodePoint to reconstruct HTML at runtime — the exact obfuscation fingerprint documented in Tycoon 2FA 2025 landing pages. Bypasses Base64 scanners because the encoding is decimal, not Base64. Distinct from `mamba-tycoon-obfuscated-html-b64-blob` (which requires Blob + large Base64 string). LevelBlue SpiderLabs April 2025, Sekoia, Trustwave, Matt Ryan PhD Sep 2025, and Validin documented Tycoon 2FA blocking 10M+ attempts per month before the March 2026 takedown — successor forks expected to persist.

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 over 1,800 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 1,800+ others, then cleans everything in one click. $4.99 one-time, no subscription.

Get started