DIVERSINET ANNOUNCES OVER-THE-AIR PROVISIONING AND LIFECYCLE MANAGEMENT SERVICES FOR OATH-COMPLIANT SOFT TOKENS

MobiSecure Innovations Simplify the Delivery of Strong Authentication Tokens for Consumer Market Applications

Mobile Business Expo 2005 CHICAGO, IL and TORONTO, ON - October 11, 2005 - Diversinet Corp. (OTCBB: DVNTF), a leading provider of mobile-enabled personal authentication and security solutions, today announced at Mobile Business Expo 2005 the release of the industry’s first open mobile security platform to support high-volume Over-The-Air (OTA) consumer deployments of OATH-compliant soft token services. Diversinet’s next generation MobiSecure Authentication Services Center (MASC) enables vendors, enterprises and service providers to deliver the most cost-effective soft token solutions to its customers, independent of device, network and application.

“Provisioning and managing strong authentication tokens for consumers globally are very complex problems for businesses and vendors alike,” says David Annan, CTO of Diversinet. “With online identity fraud growing at a rampant pace, our goal in building MASC was to simplify secure provisioning and lifecycle management of soft tokens for consumer applications. By combining OATH-compliant technologies with our robust OTA capabilities, MASC addresses the market need for a flexible, open mobile security platform and is truly a global service offering for businesses targeting the consumer masses.”

The latest release of MASC is available for commercial deployment today and offers:

• Secure OTA provisioning of multiple credentials with the MobiSecure Token Wallet, so a single user who wants to strongly authenticate against multiple services, such as online banking and consumer e-commerce applications, can generate multiple one-time passwords based on separate credentials stored in a single MobiSecure soft token application.
• Efficient OTA provisioning auto-detect features that determines the user’s device type without requiring any input from the user. This feature is critical when deploying to a large number of users who may own many different types of mobile devices.
• Enhancements for automated OTA provisioning and end-user life-cycle management. The automated provisioning, administration and remote deletion of soft tokens and credentials reduces the complexity and cost of large-scale consumer deployments.
• Capabilities to embed specific user information into any MobiSecure soft token at the time of provisioning to significantly enhance its value in consumer applications for age verification, loyalty programs and mobile payments.

# # #

About Diversinet (OTCBB: DVNTF)

Diversinet is a leading provider of mobile-enabled personal authentication and security solutions for consumer and enterprise applications. Diversinet products and services protect a user’s identity, data and device for personal communications and commercial transactions. Diversinet’s MobiSecure soft token and MobiSecure Authentication Service Center enable application providers, mobile network operators and security service providers to rapidly develop, deploy and manage secure on-line services for the over 2 billion mobile device and PC users worldwide. MobiSecure is the industry’s first open mobile security platform to support OATH-compliant strong authentication on mobile devices and personal computers. For more information about the initiative for Open AuTHentication (OATH) visit www.openauthentication.org. Connect with Diversinet Corp. at www.diversinet.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.

# # #

Contacts:

Wally Kowal
Vice President, Marketing
Diversinet Corp.
416-756-2324 ext. 231
wkowal@diversinet.com

Patrick Corman
Principal
Corman Communications
+1-650-326-9648
patrick@cormancom.com