ADVISORY/S1 Corporation Executive to Lead Discussion About Online Convergence in Financial Services At LOMA 2001.

Business/Technology Editors

ADVISORY...for Monday - Wednesday (March 26 - 28)

--(BUSINESS WIRE)

S1 Corporation Executive to Lead Discussion About Online Convergence in Financial Services At LOMA 2001

Who: S1 Corporation, a leading global provider of eFinance solutions
and services.

What: Panel Discussion on "Navigating Online Convergence in the
Financial Services Industry," and exhibition of the new release of S1
Consumer Insurance application in Booth # 500

Where: Bally's Las Vegas, Nevada

When: Presentation: Tuesday, March 27, 2001 from 4:30 - 5:30 p.m. PST
      Exhibition: Monday, March 26 through Wednesday, March 28, 2001

Gordon Sanders, vice president of global insurance for S1 Corporation, (Nasdaq: SONE) will examine the convergence of online financial services and the critical need for insurance providers to maximize their existing technology investments. Mr. Sanders will lead a panel of industry experts into a thorough discussion of the organizational and technological changes necessary to move forward with an integrated financial services offering, as well as the need for partnerships and alliances to deliver a full-featured solution to customers. With more than 20 years of experience in the insurance and technology industries, Mr. Sanders will add his expert critical commentary on the importance of eFinance applications for the growing online insurance industry. Andy Humphries, senior e-commerce executive at Zurich Financial Services, will be among several industry luminaries who will bring their own perspective on the importance of supporting convergence-based financial service applications in today's challenging and competitive market.

In addition, S1 Corporation will be demonstrating the latest version of S1 Consumer Insurance, which consolidates a financial institution's entire insurance and financial product portfolio, enabling online transaction processing and driving increased customer interaction. S1 Consumer Insurance enables financial institutions, including insurance providers, banks and brokerage houses, to leverage their existing brands while offering customers direct online access to insurance product and policy information for property, casualty, life and annuity management.

As S1's vice president of global insurance, Mr. Sanders leads a team of highly skilled professionals with extensive insurance industry expertise that is responsible for developing and executing on the Company's strategies regarding insurance products and services. Previously, Mr. Sanders served as a partner with Andersen Consulting's Financial Services practice and was southeast regional director of the national insurance industry practice for Hay Management Consultants.

Since 1924, LOMA has served as an international association, linking more than 1,250 insurance and financial services members with the goal to discuss methods to improve company operations. LOMA 2001 will focus specifically on health insurance, managed care, annuities, pensions, banking, securities, and other financial services areas. Attendees include senior level executives throughout the financial services industry.

About S1 Corporation

S1 (Nasdaq: SONE), the pioneer of Internet banking, is a leading global provider of innovative eFinance solutions and services that are centered on banking, brokerage and insurance. S1 is enabling financial service providers to create a complete Integrated eFinance Experience(TM) by delivering the tools necessary to meet the evolving demands of their customers across various lines of businesses, market segments and delivery channels. Through its Open eFinance Architecture(TM), S1 offers a broad range of applications that empower financial institutions to increase revenue, strengthen customer relationships and gain competitive advantage. Additionally, through the Company's professional services organization, S1 applications can be implemented in-house or hosted in an S1 Data Center. Additional information about S1 is available at http://www.s1.com.

Forward-Looking Statements 

This press release includes statements and other matters which are forward-looking and subject to a number of risks and uncertainties that could cause actual results to differ materially from expectations. The statements contained in this release that are forward-looking are based on current expectations and are subject to risks and uncertainties that could cause actual results to differ materially from the results contemplated by the forward-looking statements. These risks and uncertainties include, but are in no way limited to:

-- the possibility that the anticipated benefits from our acquisition transactions will not be fully realized;

-- the possibility that costs or difficulties related to our integration of acquisitions will be greater than expected;

-- our dependence on the timely development, introduction and customers acceptance of new Internet services;

-- rapidly changing technology and shifting demand requirements and Internet usage patterns;

-- other risks and uncertainties, including the impact of competitive services, products and prices, the unsettled conditions in the Internet and other high-technology industries and the ability to attract and retain key personnel; and

-- other risk factors as may be detailed from time to time in our public announcements and filings with the SEC, including the Company's annual report on Form 10-K for the year ended December 31, 1999.

In addition, nothing in the press release should be viewed as an update or comment on earlier forward-looking statements provided by S1 Corporation. As noted above, because actual results, performance or developments may differ materially from forward-looking statements, S1 will not update such statements over the course of future periods, except in the course of our reports under applicable laws.