Diversinet Ranked Number 164 Fastest Growing Company in North America on Deloitte's 2010 Technology Fast 500™

Attributes Listing to Focus on Secure Mobile Healthcare Applications

TORONTO, Oct. 20 /PRNewswire/ - Diversinet Corp. (TSX Venture: DIV, OTCBB: DVNTF) today announced that it ranked Number 164 on Technology Fast 500™, Deloitte's ranking of 500 of the fastest growing technology, media, telecommunications, life sciences and clean technology companies in North America.

"We are honored to receive this prestigious recognition," said Diversinet's Chairman and CEO, Albert Wahbe. "It affirms we are moving in the right direction in using our MobiSecure^® platform to leverage opportunities in the rapidly-growing wireless health and mHealth marketplace."

"Technology Fast 500™ recognizes innovative companies that have broken down barriers to success and defied the odds with their outstanding five-year revenue growth," said John Ruffolo, National Leader, Technology, Media & Telecommunications Industry Group, Deloitte Canada. "Deloitte is proud to honor Diversinet for this accomplishment."

Diversinet also ranked Number 33 on the Deloitte 2010 Canadian Technology Fast 50™ list of the 50 fastest growing Canadian tech companies.

For additional details on the Technology Fast 500™, including qualifying criteria, visit www.fast500.com

About Diversinet
Diversinet Corp. (TSX Venture: DIV, OTCBB: DVNTF) provides the healthcare industry with proven, reliable technology for mobile applications that securely connect people with their healthcare information, payers and providers - anyway, anytime and anywhere. Diversinet's MobiSecure^® platform helps payers and providers meet rapidly growing needs for safe, convenient, on-the-go storage and sharing of personal health data. Connect with Diversinet Corp. at www.diversinet.com. Healthcare. Connected and Protected.

The Private Securities Litigation Reform Act of 1995 and Canadian securities laws provide a "safe harbour" 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 the 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 available at www.sec.gov and Canadian securities regulatory authorities available at www.sedar.com.

The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release.

MobiSecure is a registered trademark of Diversinet Corp.

About Deloitte
As used in this document, "Deloitte" means Deloitte LLP and its subsidiaries. Please see www.deloitte.com/us/about for a detailed description of the legal structure of Deloitte LLP and its subsidiaries.

SOURCE Diversinet Corp.