1. VoIP Privacy April 2007

2. ©2007 BroadSoft®, Inc. Proprietary and Confidential; Do Not Copy, Duplicate, or Distribute 2 About BroadSoft Market Leader Market Leader VoIP Application Software Partner of Choice Partner of Choice Founded in 1998 Commercially Deployed 5+ years Profitable 250+ Fixed & Mobile Service Providers 7 of top 10 (and 13 of the top 25) global carriers Leading IMS Vendors E.g., Ericsson, Lucent 5 of top 6 TEMs OEM BroadWorks Hosted PBX / IP Centrex Bus. Trunking Residential Broadband Mobile PBX Voice and Multimedia Most Deployments Most Deployments

3. ©2007 BroadSoft®, Inc. Proprietary and Confidential; Do Not Copy, Duplicate, or Distribute 3 7 of top 10 and 13 of top 25 global carriers Leading Global Customer Base

4. ©2007 BroadSoft®, Inc. Proprietary and Confidential; Do Not Copy, Duplicate, or Distribute 4 What is VoIP? Consumer –Voice Over the Internet Vonage, Skype etc Business –IP based PBX systems –IP Centrex Systems Switching occurs in the service provider network Internet IP Network

5. ©2007 BroadSoft®, Inc. Proprietary and Confidential; Do Not Copy, Duplicate, or Distribute 5 Significant Global VoIP Subscriber Growth Source: Ovum & Infonetics, 2006

6. ©2007 BroadSoft®, Inc. Proprietary and Confidential; Do Not Copy, Duplicate, or Distribute 6 Current VoIP Privacy Issues Normal Data Attacks –DoS Attacks on data networks brings down all applications including data –Open source PBX’s have known buffer vulnerabilities SIP Vulnerabilities –Registration hijacking –Message tampering –Session tear-down –VoIP targeted DoS attack

7. ©2007 BroadSoft®, Inc. Proprietary and Confidential; Do Not Copy, Duplicate, or Distribute 7 Current VoIP Privacy Issues SPIT (Span over Internet Telephony) –Imagine your voice mail being filled up with Viagra adverts? –Huge potential for issues –Not many real world instances Vishing – Phishing using telephony –VoIP lowers the cost of Vishing –Small scale today –Already attacks on Paypal

8. ©2007 BroadSoft®, Inc. Proprietary and Confidential; Do Not Copy, Duplicate, or Distribute 8 Current VoIP Privacy Issues VoIP Hacking –One instance of brute force hacking in 2006 –$1M fraud: Offender behind bars Eavesdropping –Man in the middle attacks –Similar techniques already in place by security services for Lawful Intercept

9. ©2007 BroadSoft®, Inc. Proprietary and Confidential; Do Not Copy, Duplicate, or Distribute 9 And Lastly……Stealing Minutes Phreakers –Phreakers break into gateways to steal minutes –200M mins/month stolen worth an estimated $26M/month* –Transport networks now moving to private connectivity to avoid Phreakers * Source Stealth Communications

10. ©2007 BroadSoft®, Inc. Proprietary and Confidential; Do Not Copy, Duplicate, or Distribute 10 Current State of Play All the afore mentioned problems have either been solved or are close to being solved by session boarder controllers –Also addressed in IMS Service providers are implementing or have implemented security systems Businesses building their own VoIP networks will have to be extremely careful about implementation