# The PDF Invoice That Looks Like Your Vendor's

Fact sheet for the HTML article. Not independent research. Last generated from first-party copy.

## Source

- Human article: https://bellwetherit.com/blog/the-pdf-invoice-that-looks-like-your-vendors
- Published: 2026-07-14
- Topics: phishing, email security
- Publisher: Bellwether IT, Fresno, California
- Contact: +1-559-354-6755 · https://bellwetherit.com/contact

## Summary

A fake invoice can reach accounting when email security is not managed. Bellwether owns the protections that stop it in Microsoft 365.

## What Bellwether says it owns

- We monitor Microsoft 365 email filters and attachment rules so the fake invoice never reaches the bookkeeper.

## Claims in the article

- Sender domain checks that stop look alike addresses
- Attachment sandbox scans that open the PDF in a safe space first
- Rules that flag any invoice sent outside normal business hours
- Logging that shows which messages were blocked and why

## Article outline

- The Email That Reaches the Bookkeeper
- Protections That Should Already Be Active
- Signs Your Current Provider Has a Gap
- The Work Bellwether Handles