Some say the biggest security threat of using IP Phone/VoIP is Denial of Service attack, the fact that TCP/UDP traffic flooding could easily cause service disruption to the phone services is no doubt true and real because VoIP reliability requirements is very demanding.
Second biggest threat with IP Phone/VoIP is eavesdropping attack. Not many organisations that use VoIP deploy Secure RTP. They leave their VoIP network unprotected. Segregating the internal corporate network with VoIP does not add real protection.
These technical threats are no doubt true and real. However, the weakest link in my opinion is many people are still under the impression that unencrypted VoIP is more secure than unencrypted Emails. If you think your VoIP or IP Phone secure, think again!
Tags: VOIP, VOIP Security