What the heck? My phone bill this month is $250,000! For some reason we made thousands of calls to parts of Africa. Hopefully my service provider won’t really charge me for these calls.

—A VoIP/UC manager at a small company

Toll fraud and long-distance abuse are still the most significant and prevalent UC issues facing enterprises. Whereas a massive TDoS attack or significant financial fraud in a contact center might rival it for some enterprises, toll fraud remains the largest threat affecting the most enterprises—and no enterprise is immune. Toll fraud is especially troublesome for smaller enterprises, which have enough capacity to amass a significant amount of fraud, but often don’t have the necessary ...

Get Hacking Exposed Unified Communications & VoIP Security Secrets & Solutions, 2nd Edition now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.