Is VOIP the Next Target of Worms, Spam?

"While many issues remain unsettled in the area of Voice over Internet Protocol (VOIP) technology, IT security experts believe that it can be the next major target for various attacks. Although no high-profile cases have yet been recorded, VOIP will eventually become the target for hackers and malicious code writers, said Nigel Stewart, McAfee regional sales manager for Southeast Asia and India. He gave the warning at his presentation in the recent MediaConnect security forum here." Source: pcworld.com