A guy who calls himself Magdi Osman (has a Nigerian accent) sent an e-mail stating he had a customer for our products in Africa. I call him back. It sounded mildly suspicious. No immediate offer of purchase followed. However, a day or two later, I received an e-mail asking if we issued a certain invoice with a link to the invoice (phishing). The e-mail was from a real restaurant , with fake phone number of the "accountant". I have reasons to believe that these two occurrences are linked.