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ThreatPhishing & impersonation

Fake MyChart / Epic patient portal session-expiry or forced re-authentication lure — portal access expiring / account deactivation threat directing victim to a credential-harvest login page; distinct from breach-notification variant (iter 934) — fires on portal-access urgency without requiring breach context

mychart-epic-portal-credential-phish

What this tier means

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

How Gorganizer detects this

Fake MyChart / Epic patient portal session-expiry or forced re-authentication lure from a non-official healthcare sender. Distinct from fake-mychart-patient-portal-breach-lure (iter 934) which requires breach notification language; this signal fires on portal-access urgency with no breach narrative required — "your MyChart session has expired and your account will be deactivated within 24 hours — sign in now to keep access" or "Epic patient portal: your account requires re-verification to maintain access." MyChart is the patient-facing portal for Epic, the dominant hospital EHR system (250M+ US patient records). The signal fires when: (1) body references MyChart, Epic patient portal, Follow My Health, or similar patient portal brand AND (2) portal-access expiry, session expiry, account deactivation, or forced re-authentication urgency is present AND (3) sender is NOT from mychart.com, epic.com, or any of the 25+ major health system domains AND (4) no List-Unsubscribe or In-Reply-To. Source: GC1 R15 council #1; Cofense 2026 healthcare credential phishing report; HHS OCR portal-impersonation advisory Q2 2026.

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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