Why suspicious? Simply because it is out of the ordinary? Fraud detection systems basically have most of their feedback mechanisms geared toward reducing - eve

Why suspicious? Simply because it is out of the ordinary? Fraud detection systems basically have most of their feedback mechanisms geared toward reducing - even eliminating - false negatives, and very little attention comparatively given to false positives as long as no individual merchant notices a measurable drop in sales. Meanwhile, a hapless individual might have many of their purchase attempts foiled as false positives, and be left with little to no recourse (well, I suppose their complaint on Twitter may go viral, that does seem to work occasionally with ebay).