Diversinet’s Mobile, Internet And Security Triple Play Scores Top Ten Listings In Branham300

Company’s leadership recognized in the Canadian market for IT security and wireless solution provider expertise

TORONTO, Canada, April 6, 2005 – Diversinet Corp. (OTCBB: DVNTF), a leading provider of mobile device security for the mobile data ecosystem, has been recognized by Branham Group Inc. as one of Canada’s Top 250 Technology Companies for 2004, as well as specifically cited as a Top 10 leading IT Security Company and Wireless Solution Provider.

The Branham300 is known as the most comprehensive and trusted source of information regarding the health of the Canadian information technology industry. Diversinet placed 142^nd in the Top 250 Canadian Technology Companies categories, while placing 5^th out of 10 in the IT Security category and 8^th in the Top 10 Wireless Solution Providers category, up two spots from last year.

“Recognition by Branham Group, particularly in the IT Security and Wireless Solution Provider categories, further highlights the growing importance of mobile security and authentication services,” said Nagy Moustafa, Chief Executive Officer of Diversinet. “Branham’s rigorous selection process is a testament to both our heritage in the mobile device security space as well our commitment to innovation now and in the future.”

“Diversinet’s leadership position on the Branham300 reflects well on the company’s core capabilities to deliver value-added mobile security solutions in the IT and wireless sectors,” added Wayne Gudbranson, President and CEO of the Branham Group Inc. “Since 2001, Diversinet has consistently placed in the Top 10 in the Wireless Technology category and has admirably sustained its focus on mobile device security for the last five years running. We definitely see Diversinet as a company to watch out for in 2005 as the market for security-based solutions heat up.”

Diversinet offers an industry-leading solution for mobile-optimized strong authentication through its Diversinet MobileSecure Client and Authentication Service offerings available on all intelligent mobile device platforms including Microsoft, RIM, Symbian, Palm and Java-based phones.

This year’s Branham300 was published in the March/April issue of Backbone Magazine, www.backbonemag.com. For more information about the Branham300, visit www.branham300.com.

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About Diversinet (OTCBB: DVNTF)
Diversinet (www.diversinet.com) is a leading mobile device security provider 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 MobileSecure Client and suite of Mobile Authentication Services 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. The Diversinet MobileSecure Client delivers 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.

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