CYBS Cybersource (MM)

Attorney Advertising. The law firm of Wolf Haldenstein Adler Freeman & Herz LLP is investigating possible breaches of fiduciary duty by the Board of Directors of CyberSource Corporation (“CyberSource” or the “Company”) (NASDAQ:CYBS) arising out of the proposed acquisition of CyberSource by Visa, Inc. (“Visa”).

On Wednesday, April 21, 2010, Visa and CyberSource announced that Visa will acquire CyberSource pursuant to an all cash offer. Under the terms of the agreement, CyberSource stockholders will receive cash of $26 in exchange for each share of CyberSource common stock. However, the Company may not have adequately shopped itself before entering into this transaction and, pursuant to this proposed transaction, Visa may be underpaying for CyberSource, thus unlawfully harming CyberSource shareholders.

Wolf Haldenstein has been representing individual and institutional investors for many years, serving as lead counsel in numerous cases in U.S. federal and state courts. Please visit the Wolf Haldenstein website (http://www.whafh.com) for more information about the firm.

If you own CyberSource common stock and you wish to discuss this matter with us, or have any questions concerning your rights and interests with regard to this matter, please contact:

Gustavo Bruckner or Derek Behnke Wolf Haldenstein Adler Freeman & Herz LLP 270 Madison Avenue New York, New York 10016 Phone Numbers:   (800) 575-0735 (212) 545-4600 Email:  

bruckner@whafh.com

Classmember@whafh.com

  Website:

http://www.whafh.com

Attorney Advertising. Prior Results Do Not Guarantee A Similar Outcome.