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Il-Horn Hann, Kai-Lung Hui, Yee-Lin Lai, S.Y.T. Lee, I.P.L. PNG

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Using a field experiment, we investigate whether, and if so, how spam is targeted. By comparing the spam rates among a set of synthetic email accounts, we find that spam is targeted to clients of particular email providers, users who declared interest in particular products or services, and consumer segments that are relatively more likely to make online purchases.