Postilion and Online Resources Renew Alliance To Deliver Expanded Billpay Solutions

CHANTILLY, Va., October 16, 2007 – Online Resources Corporation (Nasdaq: ORCC), a leading provider of Web-based financial services, today announced that it has renewed a multi-year reseller agreement with Postilion, a leader in software solutions for self-service banking and payments and a division of S1 Corporation (Nasdaq: SONE), for bill payment services. Under the agreement, Online Resources will be presented as a bill payment vendor of choice to clients using Postilion Retail Internet Banking.

Online Resources has partnered with Postilion for more than eight years to deliver its industry-leading bill payment services to Postilion Retail Internet Banking clients. Those clients that choose Online Resources for bill payment will now benefit from the company’s Biller Network and Real-Time Digital Scanline™ (RTDS) technologies, which together generate the highest electronic and lowest claims rates in the industry.

“As a trusted partner, we are pleased to continue our relationship with Online Resources to offer our clients a best-of-breed bill payment service,” said Pierre Naude, General Manager of Postilion, Americas. “Their extensive payment network, RTDS technology and seamless integration make Online Resources’ billpay service an excellent complement to our enhanced online banking service.”

“Financial institutions choose Postilion Retail Internet Banking when they want to provide their consumers an outstanding online experience, and we are pleased to be an integral part of that equation,” stated Stephanie Chaufournier, Online Resources’ Executive Vice President and General Manager for Banking Payment Services. “Through our continued partnership, we look forward to delivering Postilion clients high quality bill payment services that will help them enhance their consumer relationships and maximize the value of their Internet channel.”

About Online Resources
Online Resources powers financial technology services for thousands of financial institutions, billers and credit service providers.  Its proprietary suite of account presentation and payment services are branded to its clients, and augmented by marketing services to drive consumer and business end-user adoption.  The Company serves over 10 million end-users and processes $100 billion in bill payments annually.  Founded in 1989, Online Resources (www.orcc.com) is recognized as one of the nation’s fastest growing companies.

About Postilion
Postilion, a division of S1 Corporation (NASDAQ: SONE), is a leading provider of integrated solutions for self-service banking and payment processing. Our offices, on five continents, serve customers in more than 50 countries. The Postilion product drives self-service financial transactions and payments, including advanced transactions such as prepay, through Internet access points, ATMs, POS terminals, and phones. This multi-channel architecture - built on open systems - provides consolidated management information, card management, 3DES and EMV enablement, and loyalty software solutions. At the forefront of compliance with new regulations and security enhancements, such as application validation for Visa's Cardholder Information Security Program Payment Application Best Practices (CISP PABP), Postilion can help customers achieve compliance with the latest data security standards developed by the payment card industry (PCI DSS). More information is available at www.postilion.com.

About S1 Corporation
S1 Corporation delivers customer interaction software for financial and payment services and offers unique solution sets for financial institutions, retailers, and processors. S1 employs over 1,400 people in operations throughout North America, Europe and Middle East, Africa, and Asia-Pacific regions. Worldwide, more than 3,000 customers use S1 software solutions, which are comprised of applications that address virtually every market segment and delivery channel. S1 partners with bestin- class organizations to provide flexible and extensible software solutions for its customers. Additional information about S1 solutions is available at www.s1.com, www.postilion.com, www.S1enterprise.com, and www.fsb-solutions.com.

This news release contains statements about future events and expectations, which are "forward-looking statements." Any statement in this release that is not a statement of historical fact may be deemed to be a forward-looking statement. Such forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the Company's actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Specifically, factors that might cause such a difference include, but are not limited to the Company’s: history of losses; dependence on the marketing efforts of third parties; potential fluctuations in operating results; ability to make and successfully integrate acquisitions of new businesses; potential need for additional capital; potential inability to prevent systems failures and security breaches; potential inability to expand services and related products in the event of substantial increases in demand; competition; ability to attract and retain skilled personnel; reliance on patents and other intellectual property; exposure to the early stage of market adoption of the services it offers; exposure to the consolidation of the banking and financial services industry; and additional risks and uncertainties discussed in filings made by the Company with the Securities and Exchange Commission, including those risks and uncertainties contained under the heading "Risk Factors" in the Company's Form 10-K, latest 10-Q, and S-3 as filed with the Securities and Exchange Commission. These factors should be considered in evaluating the forward-looking statements, and undue reliance should not be placed on such statements.

Media Contact: Beth Halloran
Mng. Dir., Corporate Communications
703.653.2248
bhalloran@orcc.com

Investor Contact: Catherine Graham,
EVP & Chief Financial Officer
703.653.3155
cgraham@orcc.com