Federal authorities pressed charges Thursday against a second man who helped perpetrate a VOIP wholesale scheme that defrauded at least 15 VOIP service providers.

Robert Moore of Spokane, Wash., also known as the "Spokane Hacker," was served papers Thursday but had not yet been taken into custody, according U.S. Attorney's Office spokesman Michael Drewniak.

On Wednesday, the U.S. Attorney's Office in New Jersey had filed charges against Edwin Andres Pena, who they say set up the allegedly fraudulent wholesale business -- called Fortes Telecom Inc. -- in 2004. (See 'Free' Skype Could Be Costly.)

After charging his service provider customers cheap rates to route their calls, Pena's company secretly routed the calls over the IP networks of at least 15 VOIP providers, according to court documents.

Get the details at sister site Dark Reading.

— Mark Sullivan, Reporter, Light Reading