CyberSource CEO and CFO to Speak at the William Blair and Craig-Hallum Conferences and CyberSource COO and Corporate Controller to Speak at the RBC Capital Markets Conference

CyberSource Corporation (NASDAQ: CYBS), a leading provider of electronic payment and risk management solutions, announced today that Bill McKiernan, Chairman and Chief Executive Officer, and Steven Pellizzer, Chief Financial Officer, will speak at the William Blair & Company's 29th Annual Growth Stock Conference in Chicago, IL on June 10, 2009.

The audio-only portion of the presentation will be webcast simultaneously during the conference at 10:20 am (EDT). To access the webcast of this presentation, go to: http://ir.cybersource.com/events.cfm

Mr. McKiernan and Mr. Pellizzer will also speak at the Craig-Hallum 6th Annual Institutional Investor Conference in Minneapolis, MN on June 11, 2009.

CyberSource also announced that Scott Cruickshank, President and Chief Operating Officer, and Darryl Chang, Corporate Controller, will speak at the RBC Capital Markets 2009 Technology, Media & Communications Conference in San Francisco, CA, on June 9, 2009.

The audio-only portion of the presentation will be webcast simultaneously during the conference at 1:00 pm (PDT). To access the webcast of this presentation, go to: http://ir.cybersource.com/events.cfm

Mr. McKiernan and Mr. Cruickshank will discuss CyberSource's position in the industry and its principal initiatives; Mr. Pellizzer and Mr. Chang will address the company's financial performance.

CyberSource Corporation is a leading provider of electronic payment and risk management solutions. CyberSource solutions enable electronic payment processing for Web, call center, and POS environments. CyberSource also offers industry leading risk management solutions for merchants accepting card-not-present transactions. CyberSource Professional Services designs, integrates, and optimizes commerce transaction processing systems. Approximately 262,000 businesses use CyberSource solutions, including half the companies comprising the Dow Jones Industrial Average. The company is headquartered in Mountain View, California, and has sales and service offices in Japan, the United Kingdom, and other locations in the United States including Bellevue, Washington and American Fork, Utah. For more information on CyberSource please visit www.cybersource.com or email info@cybersource.com. For more information on Authorize.Net small business solutions, please visit www.authorize.net or email sales@authorize.net.

Editorial Contact:
Bruce Frymire
CyberSource Corporation
650.965.6042
bfrymire@cybersource.com

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