The cops and robbers are just about keeping up with one another as e-commerce grows by leaps and bounds. While online retail sales grew by about two fifths in 2004, so did online fraud, staying at about 1.8 percent of sales, according to Internet Retailer. In its sixth annual survey on online fraud, CyberSource reported that retailers were able to keep fraud down to that level by heavy used of customer history files, blacklists, address verification tools and asking for credit card verification numbers. Firms on average also hired a credit fraud reviewer for every $8 million in sales. Half the retailers indicated they expect next year to be worse, and only seven percent said they thought the problem would get better.