CyberSource(R) Powers Amazon.com / Amazon.com Payments Leverages CyberSource Internet Fraud Screen and Credit Card Payment Services - WITH PHOTO -

SAN JOSE, Calif. (PROTEXT) - CyberSource Corporation (Nasdaq:CYBS), a leading developer and provider of real-time eCommercetransaction services, today announced that it has signed acontract with Amazon.com (Nasdaq: AMZN), to provide theCyberSource Internet Fraud Screen and Credit Card Services. (Photo: http://www.newscom.com/cgi-bin/prnh/19990513/CYBRSOURCELOGO ) "CyberSource's goal is to provide mission critical eCommercetransaction services that enable merchants to sell successfullyon-line," said Bill McKiernan, CyberSource's founder, Chairmanand CEO. "By working with Amazon.com, CyberSource enables one ofthe Internet's largest retailers to offer individuals the abilityto buy and sell on the Internet in a whole new way." About CyberSource Internet Commerce Suite The CyberSource Internet Commerce Suite(SM)) is a robust setof real-tim eCommerce transaction services that enable merchantsto automate commerce operations, gaining the benefits ofoutsourcing complex Internet commerce transaction infrastructurewhile maintaining flexibility and control. Through softwareinstalled on a commerce server, merchants remotely access allCyberSource services, including: Credit Card Services, TaxCalculation, Internet Fraud Screen enhanced by Visa, FulfillmentMessaging, Delivery Address Verification, Digital Delivery,Digital Warehousing, Policy Compliance, and Export Compliance. About CyberSource CyberSource is a leading developer and provider of eCommercetransaction services, and a pioneer in the area of Internet frauddetection. More than 600 Internet merchants in more than 26countries have chosen to use CyberSource services. CyberSourceprovides mission-critical reliability with the CyberSourceInternet Commerce Suite(SM), offering merchant-controlled, real-time services including Payment Services, Tax Services, RiskManagement Services, Distribution Control Services, andFulfillment Management Services. Customers of CyberSource includeleading Internet merchants and business selling on-line includingBeyond.com, BUY.COM, Casio, Compaq Computer, Egghead.com,Nike.com, Remedy and Shopping.com. For more information visit http://www.cybersource.com or email to info@cybersource.com or ir@cybersource.com CyberSource is a U.S. registered trademark. CyberSourceInternet Commerce Suite is a service mark of CyberSourceCorporation. All other brands and product names are trademarks orregistered trademarks of their respective companies. otsOriginal Text Service: CyberSource Corporation Internet:http://www.newsaktuell.de CONTACT: Sam Paior of CyberSourceCorporation, 408-260-6058, or samp@cybersource.com/ Photo:NewsCom: http://www.newscom.com/cgi-bin/prnh/19990513/CYBRSOURCELOGO AP Archive:http://photoarchive.ap.org PRN Photo Desk, 888-776-6555 or 201-369-3467/ Company News On-Call:http://www.prnewswire.com/comp/107369.html or fax, 800-758-5804,ext. 107369/ Web site: http://www.cybersource.comhttp://www.amazon.com/

Subscribers please note that material bearing the slug"PROTEXT" is not part of CTK's news service and is not to bepublished under the "CTK" slug. Protext is a commercial serviceproviding distribution of press releases from clients, who areidentified in the text of Protext reports and who bear fullresponsibility for their contents.

PROTEXT