New smart phone to provide business users with secure email capabilities while leveraging existing security infrastructure

MISSISSAUGA, Ontario –(May 11, 2004)– Certicom Corp. (TSX: CIC), the authority for strong, efficient cryptography, today announced that Sierra Wireless (NASDAQ: SWIR - TSX: SW) has embedded movianVPN™ by Certicom into its VoqMail™ Professional Edition (VoqMail Pro) wireless e-mail solution, offered for the new Voq Professional Phone™. As an embedded feature that supports multiple VPN gateways, the solution is designed to offer IT managers minimal administration and a better return on their existing security infrastructure investment.

Based on the Microsoft Windows Mobile™ software for Smartphones, the Voq Professional Phone was developed specifically for enterprise users and mobile professionals. The product is designed to offer vital business applications, such as e-mail, and strong security for sensitive and confidential information.

A key feature of the Voq Professional Phone is the ease with which the movianVPN client can be integrated into an enterprise’s existing security infrastructure and its minimal impact on performance and battery life of the phone. By making security an integral part of VoqMail Pro and its VoqManager desktop IT provisioning tool, and not a separate add-on, Sierra Wireless has created a turn-key enterprise and business data access solution that saves time and effort by eliminating the need for IT managers to work with third parties to buy and configure software and policies for each device.

“Voq was developed specifically for the needs of the business professional, and the IT Managers that support them. During development we recognized that a key requirement of the enterprise was the ability to integrate a VPN client without comprising the end user experience or increasing the burden on IT administrators,” said Andrew Harries, senior vice president of marketing for Sierra Wireless. “Working with our partners, we believe we have succeeded in building a powerful product that provides a strong, user- and IT-friendly solution.”

For over 15 years, Certicom has focused on developing and providing security for constrained environments. This expertise has resulted in a wireless VPN client that is one-tenth the size of desktop versions but with equivalent functionality. It provides strong security, including confidentiality, integrity and authentication from handheld devices to the corporate network.

movianVPN, an award-winning wireless VPN client, meets the IPSec standard to provide secure access to the corporate network via wireless handhelds. movianVPN fits with existing infrastructure by supporting more than a dozen gateways, including those from Cisco, Netscreen and Nortel and the three leading operating systems -- Microsoft Windows Mobile, Palm OS and Symbian OS -- including the various versions of the platforms.

“The combination of Sierra Wireless’ deep experience in the wireless market and their diligence in developing the Voq Professional Phone to meet specific end user requirements has resulted in a Smartphone that addresses today’s needs of the enterprise. They have optimized the user experience while focusing on process, security, and power management,” said Roy Pereira, vice-president of marketing and product management at Certicom. “We believe the Voq Professional Phone will become a real success story in the mobile market.”

Sierra Wireless announced the VoqMail Personal and Professional Edition software on February 11, 2004, introducing an always-there™ e-mail experience and providing easy-to-use, cost-efficient, and secure access to corporate e-mail. For more information, visit http://www.voq.net/site/news_events/news_20040211.voq

About Sierra Wireless
Sierra Wireless is a leader in delivering highly differentiated wireless solutions that enable our customers to improve their productivity and lifestyle. Sierra Wireless develops and markets the AirCard, the industry-leading wireless PC card line for portable computers; embedded modules for OEM wireless applications; the MP line of rugged vehicle-mounted connectivity solutions; and Voq, a line of mobile phones with easy-to-use, secure software solutions for mobile professionals. For more information about Sierra Wireless please visit www.sierrawireless.com.

About Voq
The Voq Professional Phone™ is a new class of mobile phone that offers a flip-open QWERTY thumbpad and easy-to-use software solutions for business users, including secure, serverless, always-there e-mail. Based on the Microsoft Windows Mobile™ 2003 software for Smartphone, the Voq Professional Phone incorporates the best features of your current mobile phone, a messaging device, and a PDA - in one. For more information about Voq Professional Phone or VoqMail email solutions, please visit www.voq.com

About Certicom
Certicom is a leading provider of wireless security solutions, enabling developers, governments and enterprises to add strong security to their devices, networks and applications. Designed for constrained devices, Certicom’s patented technologies are unsurpassed in delivering the strongest cryptography with the smallest impact on performance and usability. Certicom products and technologies are currently licensed to more than 300 customers including Cisco Systems, Motorola, the National Security Agency, Palm, Research In Motion, Sony Ericsson and Texas Instruments. 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.

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.

This press release does not constitute an offer to sell or the solicitation of an offer to buy any security and shall not constitute an offer, solicitation or sale in any jurisdiction in which such offering would be unlawful.

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