Carreker Corporation Press Release - November 25, 2002

TRUSTMARK CHOOSES CARREKER’S IMAGE ARCHIVE SOLUTIONS

DALLAS (November 25, 2002) — Carreker Corporation (Nasdaq: CANI ), a leading provider of technology and consulting solutions for the financial industry, announced today that Trustmark National Bank (Nasdaq: TRMK), a $7.2 billion financial services organization operating in Mississippi and Tennessee, has expanded its imaging capabilities with Carreker’s image archive solutions.

Trustmark was an early adopter of image processing, providing image statements to customers for more than five years using Carreker’s image software. Now, with the acquisition of Carreker’s archive components, Trustmark can expand their use of imaged checks, providing them to customers, tellers and other customer contact employees.

James M. Outlaw, Jr., Trustmark’s executive vice president and chief information officer, said, “With Carreker’s image archive software, we can maintain our own archive with unlimited access to the images and full control over check archive and delivery capabilities. In addition, we can begin exchanging images with other banks, which will significantly reduce our transportation and processing costs.”

J. D. (Denny) Carreker, chairman and CEO of Carreker, said, “Helping our clients better position themselves for success in an increasingly electronic environment is the driving force behind our technology. We are pleased to now offer our image solutions to the large number of regional and community banks in North America.” Denny Carreker, whose white paper “The Image Cascade” describes a compelling business case for image processing in the transitioning payments environment, added, “Trustmark’s decision to use our technology illustrates how mid-sized banks can compete effectively by delivering more value to their customers and implementing a more productive method for handling payments.”

About Trustmark National Bank

Trustmark is a diversified financial services company providing banking, investment and risk management solutions through over 150 offices and 2,400 associates in Mississippi and Tennessee. For additional information, visit Trustmark’s web site at www.trustmark.com.

About Carreker Corporation

Carreker Corporation improves earnings for financial institutions around the world. The Company’s integrated consulting and software solutions are designed to increase clients’ revenues and reduce their expenses, while improving security and increasing the value of their customer relationships. Carreker provides products and services to more than 250 clients in the United States, Canada, the United Kingdom, Ireland, Australia, and South Africa. Clients include the full range of community, regional and large banks, among them more than 75 of the largest 100 banks in the United States. Headquartered in Dallas, Texas since 1978, Carreker Corporation also has offices located around the world including London, Toronto, and Sydney. For more information, visit www.carreker.com.

Forward Looking Statement - Except for historical information, the statements in this release, including statements regarding future financial performance, the market for our products and services, and the value of our new contract signings, are forward-looking statements within the meaning of the federal securities laws. These statements are subject to numerous risks and uncertainties that could cause actual results to differ materially, including but not limited to economic, competitive, governmental and technological factors affecting our operations, markets, services, products and prices. For information concerning these risks and uncertainties, see our most recent Form 10-K. We assume no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required by law.

Carreker Corporation Contacts:

Vickie Gorton, Senior Vice President,
Director Investor Relations
972 371-1601 PH (Dallas)
972 458-2567 FX
Email: vgorton@carreker.com