Critical Path Appoints Michael Serbinis Chief Technology Officer.

Business Editors

SAN FRANCISCO--(BUSINESS WIRE)--Feb. 28, 2001

Office Of The CTO Created To Drive The Development Of Critical

Path's Next Generation Internet Messaging Infrastructure

Critical Path, Inc. (Nasdaq:CPTH), the leading provider of Internet messaging infrastructure, today appointed Michael Serbinis Chief Technology Officer. Previously as Chief Security Officer, Serbinis was instrumental in creating Critical Path's secure messaging vision and helped the company land many key enterprise and service provider customers. In his new position, Serbinis will drive the evolution of Critical Path's Internet messaging infrastructure in order to develop and promote the company's next generation products and services.

"We are fortunate to have a technology visionary of Mike's caliber and experience on board. Mike has been instrumental in making security an integral part of Critical Path's Internet messaging infrastructure and in helping to create Critical Path's phenomenal growth and global presence," said Diana Whitehead, president of Critical Path. "We are confident that Mike's leadership skills, vision and creativity will expand the capabilities and impact of Critical Path's products and services and add significant value to our worldwide customers."

As CTO, Serbinis will be charged with driving the evolution of Critical Path's Internet messaging infrastructure, according to core Critical Path strengths and the demands of the market. In addition, Serbinis will promote Critical Path's technology to the industry at large including key customers, partners, media and standards bodies. Working closely with Critical Path Engineering and Marketing, Serbinis will drive innovation, and the future advancement of Critical Path's technology through the development of next generation products and services.

"From standard email to wireless messaging, secure messaging and beyond, messaging has changed dramatically in complexity and scale of use. As a result it has begun an unstoppable evolution from mere application to carrier-class infrastructure that companies and service providers depend on to communicate any kind of information -- an evolution that is increasingly directory-centric. There is a tremendous opportunity to leverage Critical Path's clear leadership in scalable, mission critical messaging to create the next generation of Internet messaging infrastructure," said Serbinis. "I look forward to driving our technology forward to solve our customers' growing challenges in the complexity and global scale of messaging, both today and in the future."

Michael Serbinis joined Critical Path in March of 2000 as a result of the acquisition of The DocSpace Company, which he co-founded in 1997, and has been serving as the company's Chief Security Officer. Serbinis' passion for innovation began early when he developed a high-temperature superconductor propulsion system for NASA. Prior to founding The DocSpace Company, Serbinis developed one of the Internet's first search engines for Zip2, the yellow pages and directory provider that was acquired by AltaVista in 1999. He also worked for Microsoft, where he developed intelligent network routing technology using artificial intelligence. Mr. Serbinis holds a BSc in Engineering Physics from Queen's University, Canada with a specialty in cryptography, and recently completed a MASc in Industrial Engineering at the University of Toronto.

About Critical Path, Inc.

Critical Path Inc. (Nasdaq:CPTH) ignites the power of information for eBusiness by providing the Internet messaging infrastructure upon which the new economy is built. The Company is a single resource that powers the flow of mission-critical information through an integrated portfolio of secure messaging, directory, data integration and collaboration solutions. Critical Path's technology strengthens all aspects of the eBusiness value chain by providing the messaging infrastructure that fuels customers' new and existing eBusiness initiatives. Critical Path is headquartered in San Francisco, with offices worldwide. More information on Critical Path can be found at www.cp.net.

This press release contains forward-looking statements regarding the Company, including statements regarding the Company's future performance and the success of management changes. Actual results may differ materially from those suggested. The risks and uncertainties that may cause actual results to differ include market conditions, the ability to release new products in a timely manner, the success of the products, continued customer support, the company's ability to retain and expand strategic relationships, and the company's ability to retain and attract employees. These and other risks and uncertainties are described in more detail in the Company's Critical Path's Annual Report on Form 10-K/A filed March 29, 2000 and with subsequent filings with the Securities and Exchange Commission.

Note to Editors: Critical Path and the Critical Path logo are the trademarks of Critical Path, Inc. All other trademarks are the property of their holders.