21-year old Dutch hackers theft of 44K credit cards is tip of the iceberg, police say

In an international hacking case, a Dutch man appeared in U.S. federal court today and pled not guilty to stealing at least 44,000 credit card numbers, according to the Associated Press. Apparently, this is just the tip of the iceberg. 

David Benjamin Schrooten, aka "Fortezza," is being targeted by federal prosecutors for allegedly hacking into computers and stealing massive amounts of credit card numbers. Once he obtained the numbers, he allegedly sold them in bulk quantities via different Web sites. The 44,000 is reportedly from just one sale.

Police caught onto Schrooten's alleged heist last November after a Seattle restaurant owner contacted the police. According to the Associated Press, several customers who ate at the restaurant got suspicious charges on their cards. Some were even getting charged $70 to $80 in as little as 10 minutes after using their cards at the restaurant.