AuthentiDate Service Now Available on IBM's WebSphere Platform.

Business Editors

NEW YORK--(BUSINESS WIRE)--Sept. 25, 2001

AuthentiDate, Inc., a subsidiary of AuthentiDate Holding Corp. ("AHC") (NASDAQ: ADAT) and a leading provider of Trusted Content Authentication services, has integrated the AuthentiDate service through the AuthentiDate Software Development Kit (SDK) with the IBM WebSphere* Application Server. The AuthentiDate service provides WebSphere developers with the ability to provide reliable content validation for their applications that is secure, insured and auditable at any point in time.

"We are very excited to have the AuthentiDate service available to our WebSphere developers giving businesses the ability to verify and audit the originality of any data within their applications," said Bill Reedy, vice president of Business Development for IBM Software.

"With over 35,000 businesses around the world relying on IBM's WebSphere platform, the WebSphere user community represents a substantial and important market opportunity for AuthentiDate. The integration of AuthentiDate's service into the WebSphere platform enhances the security and trust associated with electronic files and data that are handled by the platform. Working with IBM provides developers for the WebSphere platform the ultimate in content authentication services," said Rob Van Naarden, AuthentiDate CEO.

The combined AuthentiDate solution working with the WebSphere platform provides developers with a fully-integrated content authentication service that addresses the need for the verification of digital information in all business processes. Providing reliable content authentication is especially advantageous for providers of online payments and other financial transaction services, as well as insurance, healthcare, and wireless applications. As a WebSphere container, the AuthentiDate SDK provides transaction support and an added layer of SSL security via HTTPS. Developers can call AuthentiDate SDK functions from within WebSphere. Quick to integrate and easy to use, the AuthentiDate auditable content system provides accurate validation of any digital item's originality and/or authenticity. It is done with true evidentiary status resulting in risk mitigation to any data associated with e-commerce applications or any digital event.

AuthentiDate's Trusted Content Authority offers the most accurate, auditable and provable time stamping service available, increasing the integrity of all digital solutions. AuthentiDate incorporates an accredited certificate authority's digital certificate, thereby proving who transmitted or authorized a transaction or document at an exact point in time. AuthentiDate answers exactly the "what" and "when" questions by delivering reliable content verification, and providing proof that an electronic document or image has not been altered or tampered with from an auditable point in time.

The AuthentiDate service integrated with the WebSphere platform allows developers easy access to content assurance and time stamping. As a J2EE compliant component, this service will easily integrate with existing Enterprise Applications. The benefits of the WebSphere environment are clustering, load balancing, concurrency and Web services.

About AuthentiDate - "The Trusted Content Authority"

As businesses move towards a rapidly increasing number of paperless transactions, AuthentiDate is positioning itself as the Trusted Content Authority. AuthentiDate's patent-pending technology addresses the need for the verification of digital information in all business processes. The AuthentiDate solution eliminates the alteration of any electronic file without detection, enabling users to authenticate a file's originality with true evidentiary status, insured to protect all parties. By "AuthentiDating" electronic files, customers are provided a time and date stamped record of a file's content. At any time in the future, they are able to check a document, spreadsheet, e-mail, digital image and digital recording against the stored AuthentiDate code, to prove its originality.

About IBM's (NYSE: IBM) WebSphere Software

WebSphere is Internet infrastructure software -- known as middleware -- that enables companies to develop, deploy and integrate next-generation e-business applications, such as those for business-to-business e-commerce. WebSphere supports business applications from simple Web publishing through enterprise-scale transaction processing. WebSphere transforms the way businesses manage customer, partner and employee relationships. More information about the WebSphere software platform is on the Web at http://www.ibm.com/websphere.

This press release contains certain forward-looking statements within the meaning of section 27A of the Securities Act of 1933 and section 21E of the Securities Exchange Act of 1934. When used in this release, the words "believe," "anticipate," "think," "intend," "plan," "will be," "expect," and similar expressions identify such forward-looking statements. Such statements regarding future events and/or the future financial performance of the Company are subject to certain risks and uncertainties, which could cause actual events or the actual future results of the Company to differ materially from any forward-looking statement. Such risks and uncertainties include, among other things, the availability of any needed financing, the Company's ability to implement its business plan for various applications of its technologies, the impact of competition, the management of growth, and the other risks and uncertainties that may be detailed from time to time in the Company's reports filed with the Securities and Exchange Commission. In light of the significant risks and uncertainties inherent in the forward-looking statements included herein, the inclusion of such statements should not be regarded as a representation by the Company or any other person that the objectives and plans of the Company will be achieved.

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