A good article on attacks that are specific to Unified Communications. Includes descriptions of Toll fraud, Vishing, DDOS, and platform compromises.
http://searchsecurity.techtarget.com/tip/0,289483
,sid14_gci1260359,00.html?track=sy320
[Editors Note (Valle): Companies that are rolling out Unified communications need to have better (multi-layer) security than other non-UC companies because much more is depending on their network and more attack vectors exist]
