Email Address Anomalies
Take a good look at the email addresses of incoming requests. There are many ways to spoof an email address, and you may find minuscule changes compared to the email you already have on record.
“For example, the email might vary by a single character,” Anastasakis said. “It might be the same address, but end in something other than .com. Slow down and look carefully, and you’ll eradicate a good portion of potentially fraudulent requests.”