Wireless data messaging provider uses Certicom's proven, commercial-off-the-shelf technology to strengthen security for mobile devices

MISSISSAUGA, Ontario – (March 28, 2006)–To help meet the stringent security requirements needed to sell to government agencies, Apriva has licensed Certicom's Security Builder GSE, a FIPS 140-2 cryptographic module, Certicom Corp. (TSX: CIC) announced today. Apriva has developed a secure wireless messaging system that supports multi-vendor wireless handheld devices and meets many government directives including the DoD 8100.2 (Department of Defense Directive 8100.2 Use of Commercial Wireless Devices, Services and Technologies) and HSPD-12 (Homeland Security Presidential Directive - 12).

"Apriva's core mission is the development of secure messaging applications including our Sensa Secure Mobile Mail solution. In the development of any product, the classic build-vs.-buy decision is always present for given needs. To rapidly bring Sensa to market, we elected to find a FIPS 140-2 approved cryptographic module versus developing our own and waiting for FIPS approval." said Rich Spinella, VP of government solutions at Apriva. "We chose to work with the Certicom team because their technology is recognized and valued by our government customers."

A Federal Information Processing Standards (FIPS) Validation assures users that a given technology has passed rigorous testing as set out by the National Institute of Standards for Technology (NIST). By using Certicom Security Builder GSE, application developers and device manufacturers can speed up the process of developing government-approved security products.

The Certicom module will be an integrated component of Apriva's Sensa Secure Mobile Mail solution, which is specifically developed to meet the needs of the U.S. federal government but has applications in other industry sectors. The solution operates on the feature-rich Windows Mobile-based PDAs. Sensa is a full S/MIME hard or soft token PKI-enabled solution and integrates with a smart card reader, also available from Apriva.

"Apriva's Sensa Secure Mobile Mail system gives the Department of Defense and other government agencies many options when choosing a device to meet their mobile email needs. But regardless of the Apriva-supported device they choose, they have the assurance that their valuable assets are secured by Certicom's government-approved technology," said Ian McKinnon, Certicom's president and CEO.

Security Builder GSE acts as a software-based cryptographic provider within the Certicom® Security Architecture™ - a comprehensive, modular and portable platform designed to allow developers to quickly and cost-effectively embed security into applications, and across multiple families and generations of devices. The modular architecture allows the higher level toolkits, SSL, IPSec and PKI to utilize the Security Builder GSE module in FIPS mode. A common application programming interface (API) unifies Certicom's modules to create a plug-and-play security architecture.

About Apriva
Founded in 1999, APPSware Wireless, LLC d.b.a. APRIVA (www.apriva.com) is a leading wireless solutions provider that integrates the hardware, software and network infrastructure required to develop and deploy high-performance mobile solutions. APRIVA's focus is primarily in the Point of Sale and Secure Messaging markets.

About Certicom
Certicom protects the value of your content, software and devices with government-approved security. Adopted by the National Security Agency (NSA) for classified and sensitive but unclassified government communications, Elliptic Curve Cryptography (ECC) provides the most security per bit of any known public-key scheme. As the undisputed leader in ECC, Certicom security offerings are currently licensed to more than 300 customers including General Dynamics, Motorola, Oracle, Research In Motion and Unisys. Founded in 1985, Certicom's corporate offices are in Mississauga, ON, Canada with worldwide sales headquarters in Reston, VA and offices in the US, Canada and Europe. Visit www.certicom.com

Certicom, Certicom Security Architecture, Certicom Trust Infrastructure, Certicom CodeSign, Certicom KeyInject, Security Builder, Security Builder API, Security Builder BSP, Security Builder Crypto, Security Builder ETS, Security Builder GSE, Security Builder IPSec, Security Builder NSE, Security Builder PKI and Security Builder SSL are trademarks or registered trademarks of Certicom Corp. 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.

For further information, please contact:

For Certicom    
Lisa Courtney Lloyd Wendy Moore-Bayley  
Jolita Communications Certicom Corp.  
(613) 271-7512 (613) 254-9268  
tim@zingpr.com bziolo@certicom.com