We have seen a fake e-mail being delivered from our support address, firstname.lastname@example.org. With a subject of “Invoice $###.##”. It will also have a link to download the invoice, which we would never do.
Please delete it immediately and notify us if you do receive one.
All of our invoices are sent directly from me, containing a pdf attachment of your invoice. The subject will always contain “Invoice #### from Implied Networks, LLC”. Those should not be ignored. We have started using a new invoice format, so the attachment might look different than usual.