http://dataviz.com.au/blog/Visualizing_VOIP_attacks.html
Through our support of the Honeynet Project, we recently attempted a new approach to visualizing attacks on their VOIP honeypots.
With the increase in popularity of VOIP telephony, attacks are becoming more prevalent. The compromise of a VOIP system can cost the victim over $100,000 in real cash. For example, an Australian based company suffered $120,000 in toll fraud as a result of a VOIP compromise.
The video is intended to be a high level (if not stylized) visualization of the early stages of a cyber criminal compromising a VOIP system.