Press Release

Richardson, TX, April 25, 2007 - Sipera Systems, the leader in pure security for VoIP, mobile and multimedia communications, today announced Technology Marketing Corporation’s (TMC) IMS Magazine has named the Sipera IPCS 520 as a recipient of the first IMS Leadership Awards. The award is the fourth prestigious honor for Sipera within the past year, along with an Internet Telephony 2006 Product of the Year award, a TMC Labs 2006 Innovation award, and a 2006 Best of Interop award.

"In order to secure VoIP and other IP communications applications from a wide variety of Internet-based threats, service providers and carriers need to deploy comprehensive VoIP security products like the Sipera IPCS solutions. By doing so proactively, they are able to protect both their networks and end users from malicious attacks and downtime, ensuring reliable, business critical communications," said Seshu Madhavapeddy, Sipera president and CEO. "This IMS Leadership award is only the latest recognition for the Sipera IPCS products, the progressive work of our security and development teams, and the Sipera VIPER Lab. It is also clear industry acknowledgement that the existing security products deliver a fraction of the functionality required to protect IMS-based core networks."

"Growth in IMS exploded in 2006 as we saw a significant year for new solutions. IMS Magazine is the leading resource for IMS and it is fitting to establish an award to recognize those companies that are doing an incredible job launching the products and services that will transform the industry," stated Rich Tehrani, president of TMC. "Honoring Sipera Systems for its incredible achievement is our way of recognizing the company as a leader in the IMS market."

The Sipera IPCS 520 is a comprehensive, real-time security system that protects IP Multimedia Subsystem (IMS) and Unlicensed Mobile Access (UMA) networks. The solution includes a security policy framework, intrusion detection and prevention functionality and troubleshooting features. The IPCS 520 protects subscribers and core infrastructure against attacks, misuse and service abuses, by intelligently monitoring signaling and media traffic to detect and prevent anomalous behavior.

The Sipera IPCS 520 is engineered specifically for service providers and supports 100,000 users and 10,000 simultaneous sessions with 2Gbps of throughput in IDS/IPS mode. The product is not a point-of-failure when deployed inline nor subject to attack, as it is deployed without an IP address as a bump in the wire, with no network configuration changes - preserving network integrity and user uptime, for fast ROI. For further information, visit www.sipera.com/ipcs520.

The 2007 IMS Leadership Award winners can be found in the April 2007 issue of IMS Magazine.

About Sipera Systems

Sipera Systems provides enterprises and service providers with comprehensive VoIP security solutions that protect, control and manage 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, 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.

Media Contacts:

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

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