ATLANTA and LONDON, January 24 /PRNewswire/ --

- Demonstration of ongoing commitment to innovation was key to award
selection

S1 Enterprise, a division of S1 Corporation (Nasdaq: SONE) and a leading
provider of multichannel financial services software, today announced that
the company has been named as one of Financial-i magazine's "Leaders in
Innovation" Award winners for 2007 in the category of Trade Finance. The
innovation award, presented to S1 in December 2007, acknowledges the S1 Trade
Finance solution's ability to solve specific business issues.

"Financial-i was impressed with the open architecture of S1 Enterprise
and its ability to integrate with corporate enterprise and cash management
systems, as well as providing flexibility for future developments and new
solutions in the trade finance space," said Anita Hawser, Managing Editor of
Financial-i, a leading European business technology publication focused on
transaction banking.

Financial-i magazine worked with an advisory panel comprising industry
analysts and thought leaders to garner their feedback on industry solutions.
The advisory panel reviewed financial technology innovations over the last 12
months, the significant impact of those innovations on the ability of banks
to deploy these business solutions cost effectively, the flexibility of
deployment and integration, and the ability to use these solutions to solve
business specific issues or concerns.

"With an expanding global and quickly evolving marketplace, financial
institutions demand an online trade finance solution that meets and exceeds
their customers' needs," said Jan Kruger, president of S1 Enterprise. "This
award further recognizes S1 Enterprise's innovation and dedication to deliver
a world class trade solution."

S1 Enterprise launched the Enterprise version of the Trade Finance
Solution in 2007. S1 Enterprise Trade Finance offers banks traditional and
innovative functionality from letters of credit and guarantees to open
account transactions and purchase order processing. A powerful user interface
and strong reporting provide valuable customer retention and granular data
integration with the bank's back-office systems to improve Straight Through
Processing and make the bank more efficient. S1 Enterprise Trade Finance
integrates over 15 years of experience building trade finance systems with
some of the largest banks in the world.

About S1 Enterprise

More than 100 banks and three million consumer, small business, and
corporate users worldwide rely on S1 Enterprise solutions to access and
manage their financial information. An independent division of S1 Corporation
(Nasdaq: SONE), S1 Enterprise is a leading provider of integrated banking
solutions that deliver financial service providers a holistic view of their
customer via a common technology platform regardless of delivery channel -
branch, call center, Internet, or voice. Additional information about S1
Enterprise is available at www.S1Enterprise.com

About S1 Corporation

S1 Corporation (Nasdaq: SONE) delivers customer interaction software for
financial and payment services. Worldwide, more than 3,000 customers use S1
software solutions, which are comprised of applications that address
virtually every market segment and every delivery channel. Community banks,
regional banks, national banks, credit unions, retailers, telcos, and
processors all rely on the banking and payments software delivered under
three brand names: Postilion, S1 Enterprise and FSB Solutions. Additional
information about S1 solutions is available at www.s1.com, www.postilion.com,
www.S1enterprise.com, and www.fsb-solutions.com.

Forward-Looking Statements

This press release contains forward-looking statements within the safe
harbor provisions of the Private Securities Litigation Reform Act. These
statements include statements with respect to our financial condition,
results of operations and business. The words "believes," "expects," "may,"
"will," "should," "projects," "contemplates," "anticipates," "forecasts,"
"intends" or similar terminology identify forward-looking statements. These
statements are based on our beliefs as well as assumptions made using
information currently available to us. Because these statements reflect our
current views concerning future events, they involve risks, uncertainties and
assumptions. Therefore, actual results may differ significantly from the
results discussed in the forward-looking statements. The risk factors
included in our reports filed with the Securities and Exchange Commission
(and available on our web site at www.s1.com or the SEC's web site at
www.sec.gov) provide examples of risks, uncertainties and events that may
cause our actual results to differ materially from the expectations we
describe in our forward-looking statements. Except as provided by law, we
undertake no obligation to update any forward-looking statement.

Web site: http://www.s1.com
              http://www.postilion.com
              http://www.S1enterprise.com
              http://www.fsb-solutions.com