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  <TITLE> Authorize.Net Holdings, Inc. (Form: 8-K) </TITLE>
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  		UNITED STATES<BR>
  	SECURITIES AND EXCHANGE COMMISSION
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  	WASHINGTON, D.C. 20549
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  	FORM 8-K
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  	CURRENT REPORT
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  	Pursuant to Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934
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  	Date of Report (Date of Earliest Event Reported):
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  	&nbsp;
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  	June 21, 2007
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  	Authorize.Net Holdings, Inc.
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  <BR>__________________________________________<BR>
  	(Exact name of registrant as specified in its charter)
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  	Delaware
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  	000-21319
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  	04-3065140
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  _____________________<BR>
  	(State or other jurisdiction
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  _____________<BR>
  	(Commission
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  ______________<BR>
  	(I.R.S. Employer
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  	of incorporation)
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  	File Number)
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  	Identification No.)
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  	&nbsp;&nbsp;
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  	293 Boston Post Road West, Suite 220, Marlborough, Massachusetts
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  	01752
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  _________________________________<BR>
  	(Address of principal executive offices)
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  	&nbsp;
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  ___________<BR>
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  	Registrant&#146;s telephone number, including area code:
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  	&nbsp;
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  	508-229-3200
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  	Not Applicable
  <BR>______________________________________________<BR>
  	Former name or former address, if changed since last report
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  	&nbsp;
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  <!-- CoverPageRegistrant END --><P><FONT SIZE="2">
  Check the appropriate box below if the Form 8-K filing is intended to
  simultaneously satisfy the filing obligation of the registrant under any
  of the following provisions:</FONT>
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  <P><FONT SIZE="2">
  [x]&nbsp;&nbsp;Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<br>
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  <B>
  	Item 8.01 Other Events.
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  Today we issued a press release announcing that, as a result of our pending merger with CyberSource Corporation, and in anticipation of a special meeting of stockholders relating to the merger, our 2007 special meeting of shareholders in lieu of annual meeting previously scheduled for June 29, 2007 has been postponed indefinitely.  Shareholders of Authorize.Net should disregard any proxy materials received prior to the date hereof.  The date of the special meeting of stockholders relating to the merger has not yet been set. Authorize.Net will announce the date, time, and place of the special meeting once a final determination has been made. A copy of the press release entitled "Authorize.Net Holdings, Inc. Announces Postponement of 2007 Special Meeting of Shareholders in Lieu of Annual Meeting" is included as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein. <br><br><br><br>
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  <B>
  	Item 9.01 Financial Statements and Exhibits.
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  <FONT SIZE="2">
  Press Release entitled "Authorize.Net Holdings, Inc. Announces Postponement of 2007 Special Meeting of Shareholders in Lieu of Annual Meeting"
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  	SIGNATURES
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  	Pursuant to the requirements of the Securities Exchange Act of 1934, the
  	registrant has duly caused this report to be signed on its behalf by the
  	undersigned hereunto duly authorized.
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  	Authorize.Net Holdings, Inc.
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  	&nbsp;&nbsp;
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  <I>
  	June 21, 2007
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  	&nbsp;
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  <I>
  	By:
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  	&nbsp;
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  <I>
  	Timothy C. O'Brien
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  	&nbsp;
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  <I>
  	Name: Timothy C. O'Brien
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  <I>
  	Title: Chief Financial Officer
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  	Exhibit&nbsp;Index
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  	Exhibit No.
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  	Description
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  	99.1
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  	&nbsp;
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  <FONT SIZE="2">
  Press Release entitled &#x201C;Authorize.Net Holdings, Inc. Announces Postponement of 2007 Special Meeting of Shareholders in Lieu of Annual Meeting&#x201D;
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metadata_documents: [{"type": "8-K", "sequence": "1", "filename": "htm_21058.htm", "description": "LIVE FILING", "secsgml_size_bytes": 10816}]
metadata_filer: {"company-data": {"conformed-name": "Authorize.Net Holdings, Inc.", "cik": "0001017172", "assigned-sic": "4812", "irs-number": "043065140", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-21319", "film-number": "07933436"}, "business-address": {"street1": "293 BOSTON POST ROAD WEST", "city": "MARLBOROUGH", "state": "MA", "zip": "01752", "phone": "5082293200"}, "mail-address": {"street1": "293 BOSTON POST ROAD WEST", "city": "MARLBOROUGH", "state": "MA", "zip": "01752"}, "former-company": {"former-conformed-name": "LIGHTBRIDGE INC", "date-changed": "19960619"}}
text: Authorize.Net Holdings, Inc. (Form: 8-K)
  UNITED STATES
  SECURITIES AND EXCHANGE COMMISSION
  WASHINGTON, D.C. 20549
  FORM 8-K
  CURRENT REPORT
  Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
  Date of Report (Date of Earliest Event Reported):
  June 21, 2007
  Authorize.Net Holdings, Inc.
  __________________________________________
  (Exact name of registrant as specified in its charter)
  Delaware
  000-21319
  04-3065140
  _____________________
  (State or other jurisdiction
  _____________
  (Commission
  ______________
  (I.R.S. Employer
  of incorporation)
  File Number)
  Identification No.)
  293 Boston Post Road West, Suite 220, Marlborough, Massachusetts
  01752
  _________________________________
  (Address of principal executive offices)
  ___________
  (Zip Code)
  Registrant's telephone number, including area code:
  508-229-3200
  Not Applicable
  ______________________________________________
  Former name or former address, if changed since last report
  Check the appropriate box below if the Form 8-K filing is intended to
  simultaneously satisfy the filing obligation of the registrant under any
  of the following provisions:
  [x]  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
  [  ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
  [  ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
  [  ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
  Top of the Form
  Item 8.01 Other Events.
  Today we issued a press release announcing that, as a result of our pending merger with CyberSource Corporation, and in anticipation of a special meeting of stockholders relating to the merger, our 2007 special meeting of shareholders in lieu of annual meeting previously scheduled for June 29, 2007 has been postponed indefinitely.  Shareholders of Authorize.Net should disregard any proxy materials received prior to the date hereof.  The date of the special meeting of stockholders relating to the merger has not yet been set. Authorize.Net will announce the date, time, and place of the special meeting once a final determination has been made. A copy of the press release entitled "Authorize.Net Holdings, Inc. Announces Postponement of 2007 Special Meeting of Shareholders in Lieu of Annual Meeting" is included as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.
  Item 9.01 Financial Statements and Exhibits.
  Press Release entitled "Authorize.Net Holdings, Inc. Announces Postponement of 2007 Special Meeting of Shareholders in Lieu of Annual Meeting"
  Top of the Form
  SIGNATURES
  Pursuant to the requirements of the Securities Exchange Act of 1934, the
  	registrant has duly caused this report to be signed on its behalf by the
  	undersigned hereunto duly authorized.
  Authorize.Net Holdings, Inc.
  June 21, 2007
  By:
  Timothy C. O'Brien
  Name: Timothy C. O'Brien
  Title: Chief Financial Officer
  Top of the Form
  Exhibit Index
  Exhibit No.
  Description
  99.1
  Press Release entitled "Authorize.Net Holdings, Inc. Announces Postponement of 2007 Special Meeting of Shareholders in Lieu of Annual Meeting"