"The rise in popularity of Voice over Internet Protocol (VoIP) is being
cited by security experts as the reason why vishing is becoming a
problem. VoIP has made calling long distance cheap, which means that
vishing crosses borders; making it hard to trace and or prosecute.
"The BBC article also states that it is relatively easy to spoof
"caller-id" with VoIP. Security Focus recently did an article that
supports this contention. In the article, a hacker easily showed the
reporter how it was done.
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http://fraudwar.blogspot.com/2006/07...-identity.html
Vishing - The New Way to Lose Your Identity