The term Nigerian Email, often referred to as a 'SCAM' is a type of fraud that originated in Nigeria in the early 2000s. It involves sending emails to unsuspecting victims, usually from a Nigerian email address, in an attempt to get them to send money or personal information. The scammer will often promise a large sum of money in return for a small investment or fee. Victims of this SCAM are often left feeling embarrassed and out of pocket. The four letter solution to this crossword is SCAM.