Business email compromise (BEC) threats are one of the many tried-and-tested tactics cybercriminals use to target their victims. Security teams can teach AI to recognise trigger words which indicate a phishing attempt or any other technique used to fool human targets. In the past, most BEC emails have been written in English ‘ meaning that defense systems can be tuned to recognise flag words and phrases written in this internationally recognized language. But recently, our researchers have observed an increase in the numbers of BEC.
Source: https://www.helpnetsecurity.com/2021/02/26/non-english-spear-phishing-emails/