DocuSign API abuse — @docusign.net sender impersonating consumer brand (Norton/PayPal/Geek Squad) with invoice amount
docusign-api-abuse-invoice-lure
What this tier means
High-confidence threat indicator — phishing, impersonation, BEC, or scam pattern. Strong contributor to the trash decision.
How Gorganizer detects this
Email from a real @docusign.net / @docusign.com address (passes DMARC/SPF) impersonates consumer brands (Norton, PayPal, McAfee, Geek Squad, Best Buy) with a dollar-amount invoice. Attackers pay for DocuSign accounts and abuse the Envelopes API to mass-send fake invoices that email auth cannot block. Wallarm and BleepingComputer documented active campaigns since Nov 2024; HHS issued a healthcare sector alert. Common amounts: $199–$499 designed to trigger callback-phone fraud.
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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