Jeremy mcnamara knew something was up when he saw the odd trail of calls to Liechtenstein. A customer in Austria ran a scam using the Nu-Fone Network, McNamara's startup in the booming business of VoIP; to route calls to premium numbers (similar to 1-900 numbers) in the 200-year-old principality known for its discreet bankers. Voice over Internet Protocol service is gaining fast—and scams are growing right along with it. By year-end 3.2 million people, triple the year-ago total, will use VoIP rather than plain old telephone service, says the Yankee Group. Many of the hundreds of new VoIP operators rely on open software standards and lack security savvy. Now the bad guys are finding it easy to divert calls for their own purposes and wreak havoc anonymously.
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