https://www.microsoft.com/en-us/research/wp-content/uploads/2016/02/WhyFromNigeria.pdf https://www.microsoft.com/en-us/research/wp-content/uploads/... ``` By s

https://www.microsoft.com/en-us/research/wp-content/uploads/2016/02/WhyFromNigeria.pdf https://www.microsoft.com/en-us/research/wp-content/uploads/... ``` By sending an email that repels all but the most gullible the scammer gets the most promising marks to self-select, and tilts the true to false positive ratio in his favor. ```