[JPMorgan letterhead]
                                                                    Exhibit 99.9
April 9, 2002

The Board of Directors
Networks Associates, Inc.
3965 Freedom Circle
Santa Clara, CA 95054

Members of the Board of Directors:

You have requested our opinion as to the fairness, from a financial point of
view, to Networks Associates, Inc. ( "Network Associates") of the Exchange Ratio
(as defined below) in the proposed Transaction (as defined below) involving
McAfee.com Corporation ("McAfee.com"). We understand that Network Associates
intends to make an offer (the "Offer") to holders of McAfee.com's Class A common
stock, $.001 par value per share ("McAfee.com Common Stock"), to exchange 0.78
shares (the "Exchange Ratio") of Network Associates' common stock, $.01 par
value per share ("Network Associates Common Stock"), for each outstanding share
of McAfee.com Common Stock other than shares held in treasury. Following
consummation of the Offer, McAfee.com will merge with a wholly-owned subsidiary
of Network Associates (the "Merger" and, together with the Offer, the
"Transaction"), and each outstanding share of McAfee.com Common Stock, other
than shares of McAfee.com Common Stock held in treasury or owned by Network
Associates and its affiliates or as to which appraisal rights are properly
perfected, will be converted into the right to receive the Exchange Ratio.

In arriving at our opinion, we have (i) reviewed certain publicly available
business and financial information concerning McAfee.com and Network Associates
and the industries in which they operate; (ii) compared the proposed financial
terms of the Transaction with the publicly available financial terms of certain
transactions involving companies we deemed relevant and the consideration
received for such companies; (iii) compared the financial and operating
performance of McAfee.com and Network Associates with publicly available
information concerning certain other companies we deemed relevant and reviewed
the current and historical market prices of the McAfee.com Common Stock and
Network Associates Common Stock and certain publicly traded securities of such
other companies; and (iv) performed such other financial studies and analyses
and considered such other information as we deemed appropriate for the purposes
of this opinion.

In addition, we have held discussions with certain members of the management of
Network Associates with respect to certain aspects of the Transaction, and the
past and current business operations of Network Associates, the financial
condition and future prospects and operations of Network Associates, the effects
of the Transaction on the financial condition and future prospects of Network
Associates, and certain other matters we believed necessary or appropriate to
our inquiry.


In giving our opinion, we have relied upon and assumed, without independent
verification, the accuracy and completeness of all information that was publicly
available or was furnished to us by Network Associates or otherwise reviewed by
us, and we have not assumed any responsibility or liability therefor. We have
not conducted any valuation or appraisal of any assets or liabilities, nor have
any such valuations or appraisals been provided to us. In relying on financial
analyses and forecasts provided to us, we have assumed that they have been
reasonably prepared based on assumptions reflecting the best currently available
estimates and judgments by management as to the expected future results of
operations and financial condition of Network Associates and McAfee.com to which
such analyses or forecasts relate. We have also assumed that the Transaction
will qualify as a tax-free reorganization for United States federal income tax
purposes, and that the Transaction will be consummated as described in the first
paragraph of this letter. We have relied as to all legal matters relevant to
rendering our opinion upon the advice of counsel. We have further assumed that
all material governmental, regulatory or other consents and approvals necessary
for the consummation of the Transaction will be obtained without any adverse
effect on McAfee.com or Network Associates or on the contemplated benefits of
the Transaction.

Our opinion is necessarily based on economic, market and other conditions as in
effect on, and the information made available to us as of, the date hereof. It
should be understood that subsequent developments may affect this opinion and
that we do not have any obligation to update, revise, or reaffirm this opinion.
Our opinion is limited to the fairness, from a financial point of view, to
Network Associates of the Exchange Ratio in the proposed Transaction and we
express no opinion as to the underlying decision by Network Associates to engage
in the Transaction. We are expressing no opinion herein as to the price at which
Network Associates Common Stock or McAfee.com Common Stock will trade at any
future time, whether before or after consummation of the Transaction.

We have acted as financial advisor to Network Associates with respect to the
proposed Transaction and will receive a fee from Network Associates for our
services, a portion of which is dependent on the closing of the Transaction. We
and our affiliates provide other investment banking and commercial banking
services to Network Associates from time to time, for which we receive customary
compensation. In the ordinary course of our businesses, we and our affiliates
may actively trade the debt and equity securities of Network Associates or the
equity securities of McAfee.com, in either case, for our own account or for the
accounts of customers and, accordingly, we may at any time hold long or short
positions in such securities.

On the basis of and subject to the foregoing, it is our opinion as of the date
hereof that the Exchange Ratio in the proposed Transaction is fair, from a
financial point of view, to Network Associates.

This letter is provided to the Board of Directors of Network Associates in
connection with and for the purposes of its evaluation of the Transaction. This
opinion may not be


disclosed, referred to, or communicated (in whole or in part) to any third party
for any purpose whatsoever except with our prior written approval. This opinion
may be reproduced in full in the Form S-4 Registration Statement and Schedule TO
relating to the Transaction but may not otherwise be disclosed publicly in any
manner without our prior written approval.

Very truly yours,

J.P. MORGAN SECURITIES INC.