Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
DIDONATO EUGENE
   2. Issuer Name and Ticker or Trading Symbol
Authorize.Net Holdings, Inc. [ANET] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP and General Counsel
(Last)
(First)
(Middle)
150 SHAW ROAD		 3. Date of Earliest Transaction (Month/Day/Year)
11/01/2007
(Street)

BROOKLINE, MA 02467		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 11/01/2007   D   6,875 D $ 0 (1) 0 D  
Common Stock 11/01/2007   D   2,274 D $ 0 (2) 0 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to buy) $ 9 11/01/2007   D     40,000 11/22/2000(3) 11/22/2010 Common Stock 40,000 $ 0 (3) 0 D  
Stock Option (right to buy) $ 7 11/01/2007   D     12,000 08/05/2002(3) 08/05/2012 Common Stock 12,000 $ 0 (3) 0 D  
Stock Option (right to buy) $ 7.7 11/01/2007   D     41,000 02/09/2004(3) 02/09/2014 Common Stock 41,000 $ 0 (3) 0 D  
Stock Option (right to buy) $ 4.67 11/01/2007   D     7,125 09/15/2004(3) 09/15/2014 Common Stock 7,125 $ 0 (3) 0 D  
Stock Option (right to buy) $ 6.16 11/01/2007   D     32,875 01/13/2005(3) 01/13/2015 Common Stock 32,875 $ 0 (3) 0 D  
Stock Option (right to buy) $ 13.17 11/01/2007   D     25,000 05/09/2006(3) 05/09/2016 Common Stock 25,000 $ 0 (3) 0 D  
Stock Option (right to buy) $ 16.1 11/01/2007   D     30,000 02/27/2007(3) 02/27/2017 Common Stock 30,000 $ 0 (3) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
DIDONATO EUGENE
150 SHAW ROAD
BROOKLINE, MA 02467		       VP and General Counsel  

Signatures

 /s/ Eugene J. DiDonato   11/01/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Represents unvested shares accelerated and disposed of pursuant to the Agreement and Plan of Reorganization dated June 17, 2007 (the "Merger Agreement") between issuer and CyberSource Corporation in exchange for a cash payment equal to the "cash exchange ratio" as defined in the Merger Agreement ($4.42 per share) plus an amount determined by multiplying 1.1611 by the closing price of CyberSource stock for the ten trading days immediately preceding the closing of the merger ($16.01 per share).
(2) Represents shares disposed of pursuant to the Merger Agreement between issuer and CyberSource in exchange for shares of CyberSource common stock and cash on the closing of the merger. Each share of the issuer is being exchanged for 1.1611 shares of CyberSource common stock plus the "cash exchange ratio" as defined in the Merger Agreement ($4.42 per share).
(3) This option was accelerated and cancelled pursuant to the Merger Agreement in exchange for a cash payment equal to the "cash exchange ratio" as defined the Merger Agreement ($4.42 per share) plus an amount determined by multiplying 1.1611 by the difference between (a) the average closing price of CyberSource common stock for the ten trading days immediately preceding the closing of the merger ($16.01 per share) and (b) the option exercise price.

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