route telephone calls over the Internet or other IP-based networks.

Moore scanned telecommunications company networks around the world, searching for unsecured ports -- the criminal complaint said that between June 2005 and October 2005, Moore ran more than 6 million scans of network ports within the AT&T network alone.

The complaint alleges that once Moore found unsecured networks, he would then e-mail Pena the key information needed to access vulnerable networks.

Once the networks were accessed, prosecutors allege that Pena ran to find the proprietary codes needed to identify and accept authorized calls coming into the networks. He allegedly would used the codes to surreptitiously route his clients' calls through the systems.

According to court documents, Pena gained more than $1 million from the scheme. Some was spent to buy real estate in Miami, a 40-foot boat and luxury cars, including a BMW M3 and a Cadillac Escalade.