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Scam prevention guide

Fake Invoice Scams

Modified bank details on invoices or entirely fabricated bills from “suppliers.”

What is this scam?

Fake invoice scams send PDFs or emails that look like real vendors, utilities, or tax authorities.

Business email compromise changes payment instructions on otherwise legitimate threads.

How it works

  • Email appears to come from a known supplier with a new IBAN or wallet address.
  • Urgent tone discourages verification with finance or the vendor.
  • Consumers receive threats of service disconnection for unpaid “bills.”
  • Attachments contain malware disguised as invoices.

Warning signs

  • Changed bank details without prior official notice
  • Sender domain slightly misspelled (rn vs m, .corn vs .com)
  • Only PDF attached with no portal reference you can verify
  • Pressure to pay today to avoid penalties
  • Invoice amount or VAT numbers that do not match records

What to do

  • Verify payment changes through a known phone number—not the email signature.
  • Use vendor portals and accounting systems to confirm open invoices.
  • Train finance staff on dual approval for new payees.
  • Report business email compromise to police and insurers if applicable.
  • Check linked payment portals with Fraudly when unsure.

Safety checklist

  • Maintain a register of approved supplier bank accounts
  • Require callback verification for any detail change
  • Enable email authentication and anti-phishing filters
  • Separate duties: requester vs approver for payments
  • Paste unknown billing URLs into Fraudly before login

Check a website before you pay

Paste a shop or payment link into Fraudly's free checker—get trust signals before you share card details or log in.

Check a website before you pay

Frequently asked questions

Our CEO emailed urgent payment instructions—what now?
Verify by phone using directory numbers. CEO fraud is a common variant—never rely on email alone.
Can Fraudly validate invoice PDFs?
Fraudly analyses website URLs. Extract and check any payment links separately.

Fraudly is not a law enforcement agency. We provide informational guidance and links to official reporting organisations.

Fake Invoice Scams — Business Email Compromise | Fraudly