As the number of VOIP deployments is expected to continue to increase, IT professionals and researchers are urging enterprises not to forget about security. Voice-over-IP security threats are viewed as more theoretical than actual. But the few cases that have come to light have been brazen and costly. For example, investigators arrested two people in 2006 for a scam in which they were accused of hacking into the networks of several unnamed companies and hijacking their VOIP bandwidth for resale.
http://www.eweek.com/article2/0,1759,2154629,00.asp
Experts: Enterprises Must Focus on VOIP Security
As the number of VOIP deployments is expected to continue to increase, IT professionals and researchers are urging enterprises not to forget about security. Voice-over-IP security threats are viewed as more theoretical than actual. But the few cases that have come to light have been brazen and costly. For example, investigators arrested two people in 2006 for a scam in which they were accused of hacking into the networks of several unnamed companies and hijacking their VOIP bandwidth for resale.