MISSISSAUGA, Ontario and SUNNYVALE, Calif., May 27, 2003 – Certicom Corp. (TSX: CIC), a leading provider of wireless security solutions, and NetScreen Technologies, Inc. (Nasdaq: NSCN), today announced that Certicom has joined the NetScreen Global Security Alliance. 

As a member of the NetScreen Global Security Alliance, movianVPN by Certicom, an award-winning virtual private network (VPN) client for wireless handhelds, is tested and certified for interoperability and complete functionality with NetScreen’s integrated firewall and VPN security solutions. 

The combined and certified Certicom and NetScreen solution allows corporations to extend existing NetScreen VPN infrastructures to support wireless devices, giving mobile workers the ability to securely access sensitive information without compromising speed and flexibility or network security overall. 

“The productivity of a mobile workforce relies heavily upon its ability to securely access applications and communicate from anywhere, anytime,” said Janine Roth, vice president of business development for NetScreen. “Certicom, together with Netscreen, allows companies to extend critical enterprise applications such as e-mail and CRM applications to mobile professionals by enabling handheld devices to connect to corporate VPN gateways for secure wireless access.”

“ With highly effective security capabilities and features designed to provide an optimal user experience, movianVPN raises the bar for wireless VPNs,” said Ian McKinnon, president and CEO of Certicom. “Certicom is committed to working with our allies to deliver world-class security solutions that extend our joint customer’s existing infrastructures.” 

To join the NetScreen Global Security Alliance, a member’s products undergo testing to certify functionality and interoperability of the two companies’ products, thereby ensuring customers’ satisfaction with the combined solution. movianVPN, version 3.0, has been tested and certified with NetScreen-5, -25, -50, -204, and -208 appliances, as well as NetScreen-500 high-performance systems running version 4.0 ScreenOS software. For the duration of the alliance, future versions of movianVPN and NetScreen products will be tested for interoperability and functionality.

For more information about movianVPN by Certicom, visit: www.certicom.com, or for a free evaluation copy visit www.certicom.com/trymovian.
For more information about the NetScreen Global Security Alliance, visit:www.netscreen.com/alliances/index.html.

About NetScreen Technologies
NetScreen Technologies, Inc., is a leading developer of integrated network security solutions that offer the security, performance and total cost of ownership required by enterprises and carriers. NetScreen’s innovative solutions provide key security technologies, such as virtual private network, denial of service protection, firewall and intrusion prevention, in a line of easy-to-manage security appliances and systems. NetScreen is located at 805 11th Ave., Sunnyvale, CA, 94089. More information on NetScreen’s products can be found at http://www.netscreen.com or by calling toll free at 1-800-638-8296.

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 are currently licensed to more than 300 customers including Texas Instruments, Palm, Research In Motion, Cisco Systems, Oracle and Motorola. Founded in 1985, Certicom is headquartered in Mississauga, ON, Canada, with offices in Ottawa, ON; Herndon, VA; San Mateo, CA; and London, England. Visit www.certicom.com.

Certicom, Security Builder, SSL Plus, Trustpoint, movian, movianVPN, movianCrypt, and movianMail are trademarks or registered trademarks of Certicom Corp. All other companies and products listed herein are trademarks or registered trademarks of their respective holders.

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. 

For further information, please contact: 

For Certicom  
Andre Fuochi Brendan Ziolo
Maverick Public Relations Certicom Corp.
(416) 640-5525 ext. 233 (613) 254-9267
andref@maverickpr.com bziolo@certicom.com
For Netscreen
Jennifer Jennings
NetScreen Technologies, Inc.