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How to Spot a Fake Invoice Before the Wire Goes Out

By the time someone says “that invoice looked totally legit,” the wire has already gone out. Phishing emails and fake invoices are not crude anymore. Attackers build them to pass a three-second scan, which is exactly how long most people spend before clicking or approving payment.

Why Fakes Pass the First Look

A convincing fake invoice copies the real vendor’s logo, uses similar formatting, and arrives from an address that looks right at a glance. The fraud lives in smaller details that most people skip when they are busy. Attackers count on that. A sender domain with one transposed letter, like “micros0ft.com” instead of “microsoft.com”, reads as correct when you are moving fast. The invoice total and vendor name match what you expect, so your eye skips the address entirely.

Fake login pages follow the same pattern. A Microsoft 365 sign-in page looks identical to the real one, except your company branding is missing. If your organization has configured a custom logo on the login screen, its absence on a page asking for your password is a signal worth stopping for.

The Specific Details Worth Checking

Before you click a payment link or enter credentials, check these:

  • The sender domain, not just the display name. Your vendor’s display name can say anything. Open the full email address and read the domain character by character. One transposed or substituted letter is the most common tell.
  • Where the payment button actually goes. Hover over any “Pay Now” or “Review Invoice” link before clicking. The URL that appears in the bottom of your browser should match the vendor’s real domain. If it resolves to a string of random characters or an unrelated domain, do not click.
  • Missing branding on login pages. If your Microsoft 365 account normally shows your company logo on the sign-in screen and a page is asking for your password without it, close the tab and navigate to the login page directly through your browser.
  • Urgency language paired with a payment request. Phrases like “payment overdue” or “account suspended” on an invoice you do not recognize are designed to push you past the checking step. Slow down when you feel that pressure.

What logic-IT Sees in Client Inboxes

The logic-IT team flags phishing attempts in client inboxes most weeks across Georgia. A recurring scenario involves a fake invoice that matches a vendor the client actually uses. The attacker researched the relationship, copied the invoice format, and changed only the payment routing details. The dollar amount and line items were accurate because the attacker had intercepted earlier correspondence. Nothing about the invoice felt wrong until someone checked the payment link destination.

Technical controls catch a large share of these. Spam filtering, multi-factor authentication, and DNS-based email authentication records like DMARC reduce what reaches your inbox. A trained employee who pauses before clicking catches what the filters miss.

Building the Habit Before You Need It

Five seconds of verification before clicking a payment link or entering credentials costs nothing. Confirm the sender domain, check the link destination, and call the vendor on a known number if the invoice feels even slightly off. Your accounts payable staff and anyone with access to financial systems should practice this on every invoice, not just the ones that feel suspicious, because the well-made fakes do not feel suspicious at all.

If your team wants a practical review of email security settings or wants to run a phishing simulation to see where the gaps are, logic-IT can help you set that up.

Dealing with something similar at your business?

We can help. Talk to the logic-IT team today.