DIVERSINET’S MOBILE, INTERNET AND SECURITY TRIPLE PLAY SCORES BIG IN PROFIT 100

Ranking reinforces Company’s position as pioneer and leader in providing mass-market mobile device security and authentication solutions  

TORONTO, Canada, June 9, 2005 – Diversinet Corp. (OTCBB: DVNTF), a leading provider of mobile device security and authentication solutions for the mobile data ecosystem, has been listed 14th in the annual PROFIT 100 ranking of Canada’s Fastest Growing Companies by PROFIT: Your Guide to Business Success.

Ranking Canada’s Fastest-Growing Companies by five-year revenue growth, the PROFIT 100 profiles the country’s most successful growth companies. Published in the June issue of PROFIT and online at PROFITguide.com, the PROFIT 100 is Canada’s largest annual celebration of entrepreneurial achievement. Diversinet’s placement on the 2005 PROFIT 100 ranking is based on its five-year revenue growth of 2,760 per cent from 1999 to 2004.

“We’re happy to welcome the 2005 PROFIT 100 winners to the most prestigious group of entrepreneurial businesses in Canada,” says Ian Portsmouth, Editor of PROFIT. “Canada’s Fastest-Growing Companies are succeeding by knowing what customers really want, then delivering it.”

“Being ranked as one of Canada’s fastest growing companies in 2004 and now in 2005 is a tribute to Diversinet’s success in the last five years in what has been a challenging environment for most technology firms,” said Nagy Moustafa, CEO of Diversinet. “Given the obvious need by businesses and individuals for solutions to protect themselves against identity theft and electronic fraud, we hope to continue this healthy growth through 2005 and beyond with our recently announced MobiSecure suite of mobile tokens and MobiSecure Authentication Service Center offerings.”

MobiSecure is designed to protect individuals, companies and enterprises from security threats such identify theft, online fraud and identity misrepresentation – better known as smorphing. Diversinet provides a suite of mobile tokens that provide cost-effective, mass-market strong authentication solutions to companies, carriers and individuals who conduct on-line transactions. MobiSecure Tokens, available on the mobile phone, eliminate the need for consumer and enterprise users to carry additional hard tokens, USB toggles or smart cards with smart card readers for two-factor authentication.

As a leading mobile authentication service provider, Diversinet provides its customers with cost effective, mobile-optimized strong authentication products and services that reduce identity theft and improve brand trust. Diversinet’s solutions leverage more than 1.5 billion consumer and enterprise mobile devices as strong authentication tokens. Diversinet’s MobiSecure suite of mobile tokens is available on all intelligent mobile device platforms, including Microsoft, RIM, Symbian, Palm and Java-based phones. The MobiSecure Authentication Service Center supports the MobiSecure suite of tokens as well as the delivery of tokens via SMS text messaging to traditional mobile phone subscribers.

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About Diversinet (OTCBB: DVNTF)
Diversinet is a leading provider of mobile device security and authentication solutions for the mobile data ecosystem. Diversinet products and services allow users to protect their identity, data and device for personal communications and commercial transactions. The Diversinet MobiSecure suite of mobile tokens and MobiSecure Authentication Service Center enable application providers, mobile network operators and security service providers to rapidly develop, deploy and manage secure mobile data services for the over 1.5 billion mobile device users worldwide. MobiSecure is the industry’s first open mobile security platform to support OATH-Compliant strong authentication on mobile devices and networks. For more information about the initiative for Open AuTHentication (OATH) visit www.openauthentication.org. Connect with Diversinet Corp. at www.diversinet.com.

About PROFIT Magazine
PROFIT: Your Guide to Business Success, offers news, strategies, tips, interviews, and other resources to entrepreneurs leading Canada’s fastest-growing companies. Each year PROFIT – which currently reaches more than 400,000 readers nationally – hosts a number of events that bring together business leaders in the fast-growth segment and champions the interests of those leaders. PROFIT was founded in April 1982 as Canada’s first national magazine geared to entrepreneurs. For more information, please visit www.profitguide.com.


The Private Securities Litigation Reform Act of 1995 provides a "safe harbor" for forward-looking statements. Certain information included in this press release (as well as information included in oral statements or other written statements made or to be made by the company) contains statements that are forward-looking, such as statements relating to anticipated future revenues of the company and success of current product offerings. Such forward-looking information involves important risks and uncertainties that could significantly affect anticipated results in the future and, accordingly, such results may differ materially from those expressed in any forward-looking statements made by or on behalf of the company. For a description of additional risks and uncertainties, please refer to the company's filings with the Securities and Exchange Commission.

Contact:
 

Michael J. O'Farrell
Chief Marketing Officer
Diversinet Corp.
416-756-2324 ext. 236
mofarrell@diversinet.com

Gary Hilson
Senior Account Consultant
Sacke & Associates Inc.
416-493-5723 ext. 203
garyh@sackepr.com