Upgraded VPN client provides support for IETF NAT-Traversal

MISSISSAUGA, Ontario –(June 29, 2004)– Certicom Corp. (TSX: CIC), the authority for strong, efficient cryptography, today announced the availability of movianVPN™ version 4.0, the first client to provide support for the Network Address Translation Traversal (NAT-T) protocol for mobile device platforms. With its support for NAT-T, movianVPN enables IT managers to deploy strong security for their wireless and remote access without having to invest in new infrastructure.

Established by the Internet Engineering Task Force (IETF), NAT enables wireless services providers to share Internet Protocol (IP) addresses with multiple users or devices. However because NAT has had compatibility issues with the IP Security (IPSec) protocol, the IETF introduced the NAT-T protocol, which enables IPSec to function seamlessly with NAT firewalls. This latest version of movianVPN supports NAT-T, providing secure and faster connectivity to wireless connections located behind a NAT firewall.

With support for Cisco IOS VPN routers and CoSine IPSX gateway, Certicom continues to support the greatest number of VPN gateway platforms of any VPN vendor. movianVPN 4.0 also offers enhanced support for Cisco 3000 and NetScreen gateways. movianVPN 4.0 supports the following handheld devices: Dell Axim X5; Handspring Treo 180/270 and 300; HP iPAQ 2210, 3950, h5450 and h5550 series; Kyocera 7135; Palm Tungsten W and Palm Tungsten C; and Toshiba e750.

"Organizations continue to choose our mobile VPN client because it is a cost-effective solution that elegantly integrates with an existing infrastructure. With movianVPN, customers know they are getting a standards-based security solution that supports more platforms and gateways than any other VPN client available today," said Roy Pereira, vice-president, marketing and product management at Certicom. "The new features built into movianVPN 4.0 offer enhanced support for wireless networks and reinforce our best-in-class position.

movianVPN continues to provide the widest support for VPN gateways, mobile platforms and connectivity methods. This includes devices using the embedded Linux, Palm, Symbian and Windows Mobile Operating Systems. movianVPN is compatible with devices manufactured by Casio, Dell, Fujitsu Siemens, Handspring, Hewlett Packard, Hitachi, Intermec, Kyocera, Motorola, Nokia, PalmOne, Samsung, Siemens, Sony Ericsson, and Toshiba.

movianVPN is part of a complete Certicom solution for wireless handheld security: movianCrypt™ secures data on the device, while movianMail™ secures e-mail and attachments from sender to recipient-even on a server. To simplify the creation and enforcement of handheld security policies with large deployments, Certicom offers movianDM™, a deployment manager.

movianVPN 4.0 is available immediately. For more information please contact a member of the Certicom Partner Network or visit www.certicom.com/movianvpn.

About Certicom
Certicom Corp. (TSX:CIC) is the authority for strong, efficient cryptography required by software vendors and device manufacturers to embed security in their products. Adopted by the US Government’s National Security Agency (NSA), Certicom technologies for Elliptic Curve Cryptography (ECC) provide the most security per bit of any known public key scheme, making it ideal for constrained environments. Certicom products and services are currently licensed to more than 300 customers including Motorola, Oracle, Research In Motion, Terayon, Texas Instruments and XM Radio. Founded in 1985, Certicom is headquartered in Mississauga, ON, Canada, with offices in Ottawa, ON; Reston, VA; San Mateo, CA; and London, England. Visit www.certicom.com.

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Certicom, Security Builder, Security Builder Crypto, Security Builder SSL, Security Builder PKI, Security Builder GSE, movianVPN, movianCrypt and movianMail are trademarks or registered trademarks of Certicom Corp. MOTOROLA and the Stylized M Logo are registered trademarks in the US Patent & Trademark Office. Java and all other Java-based marks are trademarks or registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. The Bluetooth trademarks are owned by their proprietor and used by Motorola, Inc. under license. All other companies and products listed herein are trademarks or registered trademarks of their respective holders.

Forward-Looking Statements
Except for historical information contained herein, this news release contains forward-looking statements that involve risks and uncertainties. Actual results may differ materially. Factors that might cause a difference include, but are not limited to, those relating to the acceptance of mobile and wireless devices and the continued growth of e-commerce and m-commerce, the increase of the demand for mutual authentication in m-commerce transactions, the acceptance of Elliptic Curve Cryptography (ECC) technology as an industry standard, the market acceptance of our principal products and sales of our customer's products, the impact of competitive products and technologies, the possibility of our products infringing patents and other intellectual property of fourth parties, and costs of product development. Certicom will not update these forward-looking statements to reflect events or circumstances after the date hereof. More detailed information about potential factors that could affect Certicom's financial results is included in the documents Certicom files from time to time with the Canadian securities regulatory authorities.

The shares of the company described above have been offered only to qualified institutional buyers in reliance on Rule 144A under the Securities Act of 1933, as amended (the "Securities Act"), and outside the United States pursuant to Regulation S of the Securities Act. The shares have not been registered under the Securities Act and may not be offered or sold in the United States or to a U.S. Person absent registration or an applicable exemption from registration requirements.

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For further information, please contact:

For Certicom    
Tim Cox Brendan Ziolo  
ZingPR Certicom Corp.  
(650) 369-7784 (613) 254-9267  
tim@zingpr.com bziolo@certicom.com