S1 Corporation Powers First Internet Banking Service in American Samoa.

Business Editors & High Tech Writers

ATLANTA--(BUSINESS WIRE)--Dec. 5, 2001

Bank of Hawaii Delivers Online Banking Service

to Consumers and Businesses

S1 Corporation (Nasdaq: SONE), a leading global provider of Enterprise eFinance solutions, today announced that Bank of Hawaii has launched its highly acclaimed e-Bankoh in American Samoa.

Powered by S1 applications, e-Bankoh is the first Internet banking service offered to consumers and businesses in the American Samoa market. The announcement demonstrates the growing adoption of eFinance in new markets and the competitive advantage Bank of Hawaii continues to realize from a longstanding relationship with S1.

S1 solutions are used all over the world by some of the most innovative financial institutions. In response to high demand for online banking service in American Samoa, Bank of Hawaii leveraged S1 applications to extend e-Bankoh to the island. The e-Bankoh online banking service provides customers the ability to obtain real time balances for checking and savings accounts, track expenses, transfer funds between accounts, record transactions and download statements with anytime, anywhere access to account information 24 hours a day, seven days a week.

"It is our goal to deliver convenient, leading-edge services to all of our customers - wherever they may be," said Brent Schwenke, Bank of Hawaii vice president and American Samoa country manager. "Within the first week of launching e-Bankoh, 10 percent of people with Internet access in American Samoa signed up for the service. Relying on S1 for proven eFinance applications continues to enable us to retain our customer base, attract new customers and achieve a greater return on our technology investment."

Bank of Hawaii's Web site (www.boh.com) has been widely recognized as one of the top-ranked online banking sites by business publications including Forbes "The Best of the Web," Database Magazine and Internet Web site rating and review service organizations.

"Our longstanding relationship with Bank of Hawaii points to the value S1 solutions provide in helping financial institutions meet customer needs in disparate locations throughout the world," said Jeffrey W. Lunsford, president and general manager of S1 Corporation's Americas Region. "At the same time, as a participant in our Market Leadership Partner program where customers work with S1 to develop next generation solutions, Bank of Hawaii continues to provide us with valuable input on the architectural requirements and business capabilities it needs to provide a compelling eFinance experience for its customers."

About Bank of Hawaii

Bank of Hawaii provides customers with 24-hour access to their accounts, seven days a week via the Internet, branches, ATMs, or by phoning the 24-Hour Bankoh Call Center at 1-888-643-3888, from Hawaii, American Samoa, Guam, the U.S. Mainland and Canada. Bank of Hawaii operates three branches in American Samoa, located in Fagatogo, Pavaiai and Tafuna. Bank of Hawaii is a Member of FDIC and the principal subsidiary of Pacific Century Financial Corporation, a regional financial services company headquartered in Honolulu, Hawaii, with total assets of approximately $11.9 billion as of September 30, 2001.

About S1 Corporation

S1 (Nasdaq: SONE) is a leading global provider to more than 2,600 banks, credit unions, insurance providers, and investment firms of enterprise software solutions that turn customer interactions into profits. S1's Enterprise eFinance solutions deliver a transactionable, customer-centric view across all delivery channels, resulting in a more compelling experience for the customers and a more profitable relationship for the financial institution. S1 is the only eFinance provider with the proven experience, breadth of products, and financial strength to empower financial services companies' Enterprise eFinance strategy. Additional information about S1 is available at www.s1.com.

Forward-Looking Statements 

This press release contains forward-looking statements relating to results of operations; benefits of certain programs; product benefits; market penetration and market strategies. Such statements are made based on management's beliefs as well as assumptions made by, and information currently available to, management, pursuant to "safe-harbor" provisions of the Private Securities Litigation Reform Act of 1995. While these statements reflect our best judgment, they are subject to risks and uncertainties that could cause a change in focus and direction. A discussion of certain risk factors that may cause actual results to differ from these forward-looking statements can be found in S1's Annual Report on Form 10-K for the period ended December 31, 2000, on file with the SEC.