Sipera Secures $10 Million to Further Advance VoIP/UC Security

Series C Funding Led by Duchossois Technology Partners, Includes Austin Ventures, Sequoia Capital, and STAR Ventures

Richardson, TX, October 2, 2007 - Sipera Systems, the leader in comprehensive VoIP/UC security solutions, today announced it has secured Series C funding of $10 million. The round was led by Duchossois Technology Partners (DTEC), and includes a full participation by existing investors Austin Ventures, Sequoia Capital, and STAR Ventures. The funding brings Sipera’s total amount raised to $29.5 million, and will help the company expand sales and support into other geographies; deliver more advanced real-time VoIP/UC security capabilities for the Sipera IPCS product line; and increase the VoIP vulnerability consulting services from Sipera VIPER Lab.

“Since we first introduced the Sipera IPCS 310 in 2006, we’ve expanded the IPCS product line to enable a broader range of large enterprises and service providers to better secure VoIP and unified communications. The addition of Sipera VIPER Services complements our market leading product offering by helping our customers assess and manage the risk associated with their VoIP/UC networks. Our VIPER consultants leverage the industry’s most extensive database of VoIP/UC vulnerabilities, discovered by the Sipera VIPER Lab research team,” said Seshu Madhavapeddy, Sipera president and CEO. “This funding will allow us to establish new global partnerships, further enhance our comprehensive security offering, and create a robust real-time communications risk management practice by expanding our VIPER Lab research and consulting services.”

“We are excited to lead the Series C round and invest in Sipera,” said Tony Seth, DTEC general partner. “With its blue chip customer base in the financial, health care and wireless service provider markets, partnerships with leading VoIP/UC vendors, and patented, best of breed technology, Sipera is the gold standard in a market poised for takeoff.” Seth has joined the Board of Directors of Sipera Systems.

About Duchossois Technology Partners
Duchossois Technology Partners (DTEC) is an early stage venture capital firm with offices in Chicago, IL and Austin, TX. DTEC is dedicated to helping entrepreneurs build successful enterprises and takes a value-added approach to investing. DTEC invests in early-stage hardware, component and software companies. Visit http://www.duchtech.com.

About Sipera Systems
Sipera Systems provides enterprises and service providers with comprehensive VoIP/UC security solutions that protect, control and enable real-time unified communications. The Sipera IPCS™ products combine VPN, Firewall/SBC, Intrusion Prevention, Anti-Spam, Compliance and Troubleshooting functionality for VoIP systems in a single device. This securely enables IP PBXs, VoIP remote users, SIP trunks, data/voice VLANs, hosted VoIP services and IMS or UMA-based networks. Comprised of top vulnerability research experts, the Sipera VIPER™ Lab concentrates its efforts towards identifying VoIP vulnerabilities, while Sipera LAVA™ tools verify networks’ readiness to resist attacks. Founded in 2003, and backed by Austin Ventures, DTEC, Sequoia Capital and Star Ventures, Sipera is headquartered in Richardson, TX. Visit http://www.sipera.com.

Sipera, Sipera logo, Sipera IPCS, Sipera IPCS 210, Sipera IPCS 310, Sipera IPCS 410, Sipera IPCS 510, Sipera IPCS 520, Sipera LAVA and Sipera VIPER are trademarks of Sipera Systems, Inc. All other companies and products listed herein are trademarks or registered trademarks of their respective holders.

Media Contacts:

Larry Bouchie, KMC Partners Public Relations, 617-758-4192, larry@kmcpartners.com

Brendan Ziolo, Sipera Systems, 214-606-1080, bziolo@sipera.com