highLast updated: June 2026

Fake Invoice Attacks

Attackers are impersonating vendors and resubmitting believable invoices to reroute payment flows.

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What\'s happening

Invoice fraud campaigns blend stolen branding, prior email threads, and urgent payment language.

Attackers often learn timing by watching compromised mailboxes before inserting themselves into legitimate billing cycles.

The fraud succeeds when finance teams lack verification rules for bank detail changes.

Who it targets

AP teams at growing mid-market companies

Professional services and agencies

Organizations with decentralized purchasing

Real-world examples

Repeated invoices with slightly changed bank accounts.

Urgent requests referencing a real project manager or vendor.

Fake collections notices sent from spoofed legal domains.

What it costs

Direct payment loss and vendor relationship fallout.

Time-consuming reconciliation and audit cleanup.

Possible contractual disputes about whether payment was actually made.

How to protect against it

Lock down vendor master data changes.

Call known contacts before updating payment details.

Use email security against display-name and domain spoofing.

Review approval workflows for exceptions and bypasses.

Vendors who specialize in this threat

BrightMail Shield

Email Security & Anti-Phishing

Inbox defense, domain impersonation monitoring, and phishing disruption.

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Signal Fraud Ops

Financial Fraud Prevention

Wire fraud controls, anomaly detection, and finance-team verification workflows.

Find More Vendors for This Threat

AwareLine Training

Security Awareness Training

Behavior-focused training for phishing, social engineering, and policy hygiene.

Find More Vendors for This Threat

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