Palo Alto Networks Unit 42 researchers have actively monitored the evolution of SilverTerrier Nigerian Business Email Compromise (BEC) threat actors.

The threat actors have been attributed to more than 51,000 malware samples and 1.1 million cyber attacks over the last four years as they are gaining experience quickly as they adopt new technologies, techniques, and malware to advance their schemes, according to a May 9 blog post.

Researchers said that while BEC scams are a global threat, the focus on Nigerian actors provides insight into one of the world’s largest subcultures given the country’s historic ranking as a top five hotspot for cybercrime.

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