The Vision Takes Shape

CyberSource

Company All-Hands Meeting June 18, 2007

Exhibit 99.4

2

"Safe Harbor" statement under the Private Securities Litigation Reform Act of 1995

Statements

in

this

presentation

that

are

not

purely

historical

are

forward-looking

statements within the meaning of Section 27A of the Securities Act of 1933 and

Section 21E of the Securities Exchange Act of 1934, including, without limitation,

statements regarding the company's expectations, objectives, anticipations, plans,

hopes, beliefs, intentions or strategies regarding the future. For example, statements

of expected synergies, timing of closing, customer solutions, e-commerce

growth,

and

industry

leadership

are

all

forward-looking

statements.

Risks,

uncertainties and assumptions include the possibility that development of these

products and services may not proceed as planned; that the merger does not close or

that the companies may be required to modify aspects of the transaction to achieve

regulatory approval; or that prior to the closing of the proposed merger, the

businesses of the companies suffer due to uncertainty; that the parties are unable to

successfully execute their integration strategies or achieve planned synergies; other

risks

that

are

described

from

time

to

time

in

CyberSource’s

and

Authorize.Net

Holdings, Inc.’s Securities and Exchange Commission reports (including, but not

limited to, CyberSource’s

annual report on Form 10-K for the year ended December

31,

2006,

and

Authorize.Net’s

Form

10-K

for

the

year

ended

December

31,

2006,

and

subsequently filed reports).

If any of these risks or uncertainties materializes or any

of

these

assumptions

proves

incorrect,

CyberSource’s

or

Authorize.Net’s

results

could

differ

materially

from

CyberSource’s

or

Authorize.Net’s

expectations

in

these

statements.

Neither CyberSource

nor Authorize.Net

assume any obligation and they

do not intend to update these forward-looking statements.

The Vision Takes Shape

4

•

CyberSource

Acquisition

•

Value: approx $565M

•

Ownership: 53/47

•

McKiernan: Chairman & CEO

•

Cruickshank: President & COO CyberSource

•

Banks: President Authorize.Net

•

Close Sep/Oct

5

A Perfect, Friction-Free

Payment Transaction.

Worldwide.

Own Payment Management

eCommerce Payment Management Depth

Mid-Sized to Enterprise Sales Expertise

7

SMB IP Payment Depth

Web

MOTO

POS

Mobile

Extensive Channel Network & Systems

2,500 Resellers :  175,000 Merchants

8

9

•

Top-Bottom Coverage

•

Extensive Distribution Network

•

~200,000 Merchants

•

1.1B Txns

/ $65B Processed 2006

MEB

SMB

11

eCommerce Growth

•

Small to Enterprise

•

Domestic & Global

Web-based

Payments

12

Additional Information and Where to Find It

CyberSource

and Authorize.Net

will file a joint proxy statement/prospectus with the

SEC in connection with the proposed merger. Investors and security holders are

urged to read the joint proxy statement/prospectus when it becomes available and

any other relevant documents filed with the SEC because they will contain important

information. Investors and security holders will be able to obtain these documents

free of charge at the website maintained by the SEC at www.sec.gov. In addition,

documents

filed

with

the

SEC

by

CyberSource

are

available

free

of

charge

by

contacting

Investor

Relations,

CyberSource

Corporation,

1295

Charleston

Road,

Mountain View, California 94043-1307, (650) 965-6000, and documents filed with the

SEC by Authorize.Net

are available free of charge by contacting Investor Relations,

Authorize.Net

Holdings, Inc., 293 Boston Post Road, West #220, Marlborough, MA

01752, (866) 916-7380.

Participants in Solicitation

CyberSource

and Authorize.Net, and their respective directors, executive officers and

other possible employees and advisors, may be deemed to be participants in the

solicitation

of

proxies

from

the

stockholders

of

CyberSource

and

Authorize.Net

in

connection with the merger and related items. Information regarding the directors and

executive

officers

of

CyberSource

and

their

ownership

of

CyberSource

shares

is

set

forth

in

the

proxy

statement

for

CyberSource’s

2007

annual

meeting

of

stockholders,

which was filed with the SEC on April 9, 2007. Information regarding the directors and

executive

officers

of

Authorize.Net

and

their

ownership

of

Authorize.Net

stock

is

set

forth

in

the

proxy

statement

for

Authorize.Net's

2007

annual

meeting

of

stockholders,

which was filed with the SEC on April 30, 2007. Investors may obtain additional

information regarding the interests of those participants by reading the proxy

statement/prospectus when it becomes available.