Country
Nigeria

Source
Intelligence Report by Crowdstrike

Title
Nigerian Confraternities Emerge as Business Email Compromise Threat

About
Dated March 2018| Covers cybercriminals use of Chinese email accounts, romance Scams, 419 scams, BEC, use of Facebook in scams | Covers some of the main confraternities.

Key findings
Concludes: that some of the groups are ruthless | Highly organised and tenacious | The magnitude of this criminal threat has only recently begun to be understood. As such, the threat posed by Black Axe and similar groups will remain high for the foreseeable future, and BEC will remain an effective eCrime technique in the near to mid-term.

Website
https://www.crowdstrike.com/wp-content/uploads/2020/03/NigerianReport.pdf