The other issue that struck the firm at the outset was that the name of one of the client's companies, as shown in an official document, was different to the one mentioned in email communications. The prospective client was purporting to send over US$489,000 to the firm, asking that the difference in fees be refunded back. 

Convincing

The McCown firm said that much information supplied was detailed and convincing - including the reason for needing legal advice, that it was entering into a contract with a local Dallas-Fort Worth business. The 'client' produced several apparently legitimate documents to support its request. The scam was only uncovered when the firm checked with the stated head office of the 'client' in the US.  Source: ABA