The FBI is seeking two Europeans who are alleged to be have been involved in attacks on web retailers.
The indictment claims that Graham Walker ran a network of hijacked botnets that bombarded web shops with bogus data in a bid to overwhelm them. The machines were hijacked with the aid of a virus, called Agobot, that was created by Axel Mr Gembe from Germany.
Both men are being sought in connection with attacks on two sellers of satellite TV equipment. The FBI said the pair carried out so-called Denial of Service attacks that knocked the web shops offline. If convicted the men face a maximum 15-year jail sentence.
The attacks targeted two shops that sell digital video recorders and TV satellite equipment: Miami-based Rapid Satellite and Los Angeles-based Weaknees.
In October 2003, the companies' websites were forced offline for a fortnight, and recovery from the attacks cost one of the shops $200,000.