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ThreatOther

Multi-actor BEC handoff chain — email references a named or titled third party (recruiter, HR, legal counsel, executive, account manager) handing off to the victim, combined with a finance or credential request (wire transfer, ACH, bank details, DocuSign, gift card, SSO login), suggesting a "social-proof introduction → payment/credential attack" chain

multi-actor-bec-handoff-chain

What this tier means

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

How Gorganizer detects this

Detects the "multi-actor handoff" Business Email Compromise chain where attackers reference a named or titled third party — recruiter, HR representative, hiring manager, legal counsel, CFO, account manager — who has allegedly introduced or handed off the victim to the attacker's persona. The social-proof introduction ("Your recruiter Sarah has passed your details to our finance team", "I've asked John, our CFO, to reach out", "on behalf of the executive team — please submit your banking details") lowers the victim's guard before the financial or credential request. The signal co-requires: (1) multi-party handoff language (third-party intro, on-behalf-of, cc'ing a department, handing this over) AND (2) finance or credential request (wire transfer, ACH, bank account/routing number, DocuSign, gift card, SSO login link, direct deposit form). Implemented as a single-email text-pattern signal; DB-join enhancement using correspondent_first_seen timestamps is deferred to a future round. Does not fire for bulk mailers (List-Unsubscribe present), real reply threads (In-Reply-To present), or protected sender domains. Source: RT-R8MA-C1B; FBI IC3 BEC advisory 2023-2025; CISA BEC awareness guidance.

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.

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