How well can experienced Internet shoppers detect new forms of seller deception on the Internet? This study examines consumer evaluations of a real commercial web site and a fraudulent site that imitates it. The forged site contains malicious manipulations designed to increase trust in the site, decrease perceived risk, and ultimately increase the likelihood that visitors would buy from it, Besides measuring the consumer's willingness to buy from the site, this study recorded the actual ordering of a laptop. Results show that most subjects failed to detect the fraud manipulations, albeit a fe cv succeeded. The fraud has the effect of increasing the consumers' reliance in assurance mechanisms and trust mechanisms, which in turn decrease perceived risk and increase trust in the store, The study confirms hypothesized relationships between purchase behavior, willingness to buy, attitudes toward the store, risk, and trust that are consistent with other trust models found in the literature. Past research is augmented by showing that perceived risk and trust interact in their effects on consumer attitudes, by distinguishing between the notions of assurance and trust, and by identifying the effects of perceived deception on risk and trust. Overall, the study sheds light on consumers' vulnerability to attack by hackers posing as a legitimate site.