SUNNYVALE, Calif., May 22, 2006- Fortinet - the pioneer and leading provider of multi-threat security solutions- today announced it has completed an acquisition of all pending patents and related intellectual property (IP) assets of CoSine Communications, Inc., (Other OTC:COSN.PK). In connection with the sale, CoSine retained a limited right to continue using the transferred IP to support its existing customers.

The acquisition significantly strengthens Fortinet's IP and patent portfolio and provides the company with key innovations that will allow it to better address the carrier/service provider market. Terms of the transaction are confidential.

CoSine was a leading provider of a widely-adopted Internet Protocol (IP) Service Delivery Platform that enabled telecommunication carriers and network service providers to rapidly deliver a an array of secure services simultaneously to thousands of subscribers from within a service provider's network, including managed firewall, VPN and security broadband access. Products offered by CoSine included the IPSX switch, InVision service management system and InGage customer network management software.

The acquired IP portfolio covers a diverse set of technologies and key applications pertaining to methods for delivering security services through hardware than software platforms, managing subscriber profiles, and router virtualization and management.

"CoSine was an early innovator in the networking and security arena - revolutionizing the way security was deployed, delivered and managed on a massive scale. They were active in seeking patent protection for their key technological achievements and their IP portfolio reflects this diligence," said Ken Xie, Fortinet's founder, president and CEO. "We're excited to have acquired these assets and believe they will play an important role in Fortinet's growth in the high-end segment - particularly the carrier and service provider market."