Press Release

September 9, 2003

RIM Adds Support for S/MIME Email Security Standard to Java-Based BlackBerry Handhelds

BlackBerry Meets Advanced Wireless Security Standards for Government and Corporate Customers

Waterloo, ON - Research In Motion (RIM) (Nasdaq: RIMM; TSX: RIM) today announced the availability of its S/MIME Support Package v1.5 for BlackBerry. This software add-on product provides S/MIME (Secure Multipurpose Internet Mail Extensions) support for Java™-based BlackBerry® handhelds and is now commercially available to all government and corporate customers.

"S/MIME support is an important purchasing requirement for many of our customers including the U.S. Department of Defense," said Don Morrison, Chief Operating Officer at Research In Motion. "With the availability of S/MIME support for Java-based BlackBerry handhelds, our customers will enjoy a wider choice of BlackBerry handhelds and services that satisfy various corporate and departmental security policies relating to wireless phone and data usage. IT departments in both corporate and government organizations can now install this straightforward software upgrade to wirelessly extend their existing S/MIME email infrastructure while maintaining both sender-to-recipient encryption and a simple and fast interface for users."

S/MIME is an email-system independent, Internet standards-based protocol that uses public key cryptography to provide writer-to-reader security features such as authentication and confidentiality message integrity. S/MIME offers an additional layer of security between the sender and recipient of an email message using advanced encryption and digital signatures. S/MIME support can now be added to all Java-based BlackBerry handhelds (including models 7230/7210/6750/6720/6710/6510/6220/6210/5820/5810) in companies with BlackBerry Enterprise Server™ v3.5 or higher for Microsoft® Exchange.

BlackBerry Enterprise Server has been deployed in over 11,000 companies and government organizations worldwide and features end-to-end Triple DES encryption to address corporate customer security requirements. In addition, BlackBerry has received the FIPS security validation for government customers.

Availability of the S/MIME Support Package v1.5 for BlackBerry may vary by country and carrier. Check with carriers for specific pricing and availability.

About Research In Motion (RIM)

Research In Motion is a leading designer, manufacturer and marketer of innovative wireless solutions for the worldwide mobile communications market. Through the development of integrated hardware, software and services that support multiple wireless network standards, RIM provides platforms and solutions for seamless access to time-sensitive information including email, phone, SMS messaging, Internet and intranet-based applications. RIM technology also enables a broad array of third party developers and manufacturers to enhance their products and services with wireless connectivity to data. RIM's portfolio of award-winning products, services and embedded technologies are used by thousands of organizations around the world and include the BlackBerry® wireless platform, the RIM Wireless Handheld™ product line, software development tools, radio-modems and software/hardware licensing agreements. Founded in 1984 and based in Waterloo, Ontario, RIM operates offices in North America, Europe and Asia Pacific. RIM is listed on the Nasdaq Stock Market (Nasdaq: RIMM) and the Toronto Stock Exchange (TSX: RIM). For more information, visit www.rim.com or www.blackberry.com.

Forward-looking statements in this news release are made pursuant to the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995. When used herein, words such as "intend" and similar expressions are intended to identify forward-looking statements. Forward-looking statements are based on assumptions made by and information available to Research In Motion Limited. Investors are cautioned that such forward-looking statements involve risks and uncertainties. Important factors that could cause actual results to differ materially from those expressed or implied by such forward looking statements include, without limitation, possible product defects and product liability, risks related to international sales and potential foreign currency exchange fluctuations, the initiation or outcome of litigation, acts or potential acts of terrorism, international conflicts, significant fluctuations of quarterly operating results, changes in Canadian and foreign laws and regulations, continued acceptance of RIM's products, increased levels of competition, technological changes and the successful development of new products, dependence on third-party networks to provide services, dependence on intellectual property rights and other risks and factors detailed from time to time in RIM's periodic reports filed with the United States Securities and Exchange Commission, and other regulatory authorities. The Company has no intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Research In Motion, RIM and BlackBerry are trademarks of Research In Motion Limited. Research In Motion and RIM are registered with the U.S. Patent and Trademark Office and may be pending or registered in other countries. All other brands, products and company names mentioned herein may be trademarks or registered trademarks of their respective holders.