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EXHIBIT 99.A
EXHIBIT A
RELEVANT SUBSIDIARIES OF PARENT HOLDING COMPANY
PART A: TCW ENTITIES
PARENT HOLDING COMPANY:
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The TCW Group, Inc.
Robert Day (an individual who may be deemed to control The TCW
Group, Inc.)
RELEVANT SUBSIDIARIES THAT ARE PERSONS DESCRIBED IN RULE 13d-1(b):
(i) Trust Company of the West, a California corporation and a
bank as defined in Section 3(a)(6) of the Securities
Exchange Act of 1934.
(ii) TCW Asset Management Company, a California corporation and
an Investment Adviser registered under Section 203 of the
Investment Advisers Act of 1940.
(iii) TCW Investment Management Company, fka: TCW Funds
Management, Inc., a California corporation and an
Investment Adviser registered under Section 203 of the
Investment Advisers Act of 1940.
Note: No Class A Common Stock of McAfee.Com Corp. is held directly by
The TCW Group, Inc. Other than the indirect holdings of The TCW
Group, Inc., no Class A Common Stock of McAfee.Com Corp. is
held directly or indirectly by Robert Day, an individual who may be
deemed to control The TCW Group, Inc.
PART B: NON TCW ENTITIES
PARENT HOLDING COMPANY:
Robert Day (an individual who may be deemed to control the entities
described below which are not subsidiaries of The TCW Group, Inc.)
RELEVANT SUBSIDIARIES THAT ARE PERSONS DESCRIBED IN RULE 13d-1(b):
Oakmont Corporation, a California corporation and an Investment
Adviser registered under Section 203 of the Investment Advisers Act
of 1940.
A-1
