Oct 24, 2005

Authentidate Holding Corp. (Nasdaq: ADAT) today announced it has appointed Joan Rothman as Vice President of Marketing, effective immediately.

In the new position, Rothman will be responsible for all corporate marketing initiatives, including the launch and promotion of new products and applications. She will be based out of Authentidate's Berkeley Heights, NJ office and report directly to Suren Pai, Chief Executive Officer.

Previously, Rothman was Vice President of Global Solutions Marketing at IBM where she established the company's first cross-brand solutions marketing group, leading global planning and marketing execution for IBM's top strategic alliances.

Prior to IBM, Rothman was at Dun & Bradstreet (D&B), a leading provider of global business information and tools. At D&B, she held number of senior executive positions, including Senior Vice President of Strategic Planning and Research and Senior Vice President of U.S. Marketing. Joan was also a key member of the CEO's globalization team and was responsible for marketing initiatives surrounding the launch of many of D&B's new products and services.

Suren Pai, Chief Executive Officer of Authentidate, said, "We are pleased to expand our management team with the addition of Joan Rothman as Vice President of Marketing. Her appointment comes at an important time for our company as we continue to make progress in the execution of our growth plan. Joan's expertise in marketing broadly as well as in vertical markets will be a significant asset to Authentidate as we focus our customized electronic processing solutions in targeted areas where trusted, third-party non- repudiation of content is paramount. Under her direction, we expect to increase brand awareness of our advanced authentication and security software products and services and strengthen our position in the emerging electronic postmark industry."
"I am delighted to join Authentidate and enhance its pioneering role in EPM by leveraging my experience in new product launches and brand identity," said Rothman. "I look forward to working with management and contributing to the company's long-term success through the aggressive marketing of Authentidate's growing portfolio of unique, technology-based solutions."

Rothman received a BS in Marketing from Fairleigh Dickinson University in Madison, NJ and an MBA from Baruch College in New York.

About Authentidate Holding Corp.
Authentidate Holding Corp. (AHC) is the holding company which operates its software and services businesses in three segments: the Security Software Solutions Segment (fka Authentidate Segment, including Authentidate, Inc., Trac Medical Solutions, Inc. and Authentidate International AG), the Document Management Solutions Segment (fka Docstar Division) and the Systems Integration Segment (fka DJS).

The Company is a worldwide provider of secure enterprise workflow management solutions that incorporate its proprietary and patent pending content authentication technology. Authentidate's offerings include the United States Postal Service Electronic Postmark Service (USPS EPM(R)), electronic signing solutions, and electronic forms processing solutions. Authentidate also provides secure document management solutions, and enterprise network security products and services.

This press release contains forward-looking statements within the meaning of section 27A of the Securities Act of 1933 and section 21E of the Securities 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, related decisions by the USPS, 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.

SOURCE Authentidate Holding Corp.