_ VendorWeb-Office of the Comptroller

An official website of the Office of the Comptroller

Main Navigation

  How to Use VendorWeb
  MassHealth Providers
  Vendor Resources
  1099 FAQs
Home  Contact  FAQs  Log In

VendorWeb

New to VendorWeb? Please see the “How to Use VendorWeb” job aid for a description of system features and instructions.

November 14, 2025

Vendors Beware: New email scam targeting Commonwealth of Massachusetts vendors

Another scam is targeting vendors to the Commonwealth of Massachusetts, in which fraudsters are using publicly available information to identify their targets.

In many of these cases, the fraudster is pretending to be a state agency. An example of a fraudulent email includes: “The Commonwealth of Massachusetts implemented a new Secure Email System on September 24, 2024. If this is the first Email you have received via this new system, you will be required to register before reading your message.”

These emails are phishing attempts. Do not follow any links in these emails, as they may be malicious. To be clear, the Commonwealth has not implemented a change in its email system.

Previous scams purported to represent the Commonwealth of Massachusetts, and requested that vendors submit an Electronic Funds Transfer (EFT) Authorization Form with banking information if they wish payments to continue.

Vendors are reminded that if they receive an unexpected link or attachment, or are asked to submit sensitive information such as banking info:

Pause and do not open any links/attachments, and do not submit the requested information until you have directly contacted a trusted source at the department with whom they are doing business. This should be done via phone, video call, or in person (not by email).

If you have been targeted in this way, please forward that email to comptroller.info@mass.gov, and the Office of the Comptroller will be in touch.

Welcome to VendorWeb

Using this website, vendors to the Commonwealth of Massachusetts can easily and quickly view scheduled payments, payment history, and tax Forms 1099.
If you require assistance, please have your vendor code ready and contact the Office of the Comptroller Solution Desk at comptroller.info@mass.gov or 617-973-2468.