AMENDMENT TO REGISTRATION RIGHTS AGREEMENT
This Amendment to Registration Rights Agreement (this “Amendment”), dated October 11, 2006, is
made by and among CyberDefender Corporation, a California corporation (the “Company”), and the several
purchasers signatory hereto (each such purchaser, a “Purchaser” and, collectively, the “Purchasers”).
WHEREAS , the parties to this Amendment entered into that certain Registration Rights Agreement
dated as of September 12, 2006 (the “Agreement”); and
WHEREAS , the parties to this Amendment desire to amend the Agreement as hereinafter provided;
NOW, THEREFORE , in consideration of the premises and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties to this Amendment agree as follows:
The definition of Filing Date in Section 1 of the Agreement is hereby amended and restated
in its entirety as follows:
“ Filing Date ” means, with respect to the initial Registration Statement required hereunder,
October 31, 2006 and, with respect to any additional Registration Statements which may be required
pursuant to Section 3(c), the 30 th day following the date on which the Company first knows, or
reasonably should have known that such additional Registration Statement is required hereunder.
Except as amended hereby, the Agreement shall continue in full force and effect in
accordance with its terms.
IN WITNESS WHEREOF , the parties have executed this Amendment as of the date set forth above.
By: /s/ Gary Guseinov
Name: Gary Guseinov
Title: Chief Executive Officer
[PURCHASER SIGNATURES FOLLOW]
[PURCHASER SIGNATURE PAGE OF
AMENDMENT TO REGISTRATION RIGHTS AGREEMENT]
Bushido Capital Master Fund, LP
By: Louis Rabman
/s/ Louis Rabman
Pierce Diversified Strategy Master Fund LLC,
Series BUS (6)