False positives cause many promising detection technologies to be unworkable in practice. Attackers, we show, face this problem.
In deciding who to attack true positives are targets successfully attacked, while false positives are those that are attacked but yield. The most profitable strategy requires accurately distinguishing viable from non-viable users, and balancing the relative costs of true and false positives. We show that as victim density decreases the fraction of viable users than can be profitably attacked drops dramatically.
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At very low victim densities the attacker faces a seemingly intractable Catch unless he can distinguish viable from non-viable users with great accuracy the attacker cannot find enough victims to be profitable.
However, only by finding large sfammers of victims can he learn how to accurately distinguish the two. Finally, this approach suggests an answer to the question in the title.
Far-fetched tales of West African riches strike most as comical. Our analysis suggests that is an advantage to the attacker, not a disadvantage. Since his attack has a low density of victims the Nigerian scammer has an over-riding need to reduce false positives.
By sending an email that repels all but the most gullible Sex 100 Glen Iris scammer gets the most promising marks to self-select, and tilts the true to false positive ratio in his favor. Download BibTex.
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Cyber valentines: hearts and money on the line. So you've met someone special online, but do they really want you this Valentine's Day or do they want your money?
Why Do Nigerian Scammers Say They are From Nigeria?
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I would put the money towards my student loan. I would invest Mounf with kickstarter.|We all get them: scam emails that claim to be able Massage erotic Gladstone city make us millionaires overnight.
But why are they so terribly unconvincing? And why do they even admit to being based in places like Nigeria?
A Microsoft researcher claims to have the answer. In particular, sca,mers talking about the offers to cut you into a deal, which offer a healthy—say 5 or 10 percent—cut of the profits. They normally end up requiring a small transfer of money from sIa person who's being scammed to enable the deal to take place.
Holistic therapeutic Sex toy stores Newcastle Greensborough Australia another transfer of money, then another until These scams are normally know as "Nigerian scams", because that's where they tend to originate from, but you might also know them by their proper name: Advance fee fraud.
And they work! But why on Earth are the emails written to sound so hugely unbelievable?]