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                                                                    EXHIBIT 99.3

Contact:   Joel Katz, CFO
           404-467-3011
           jkatz@harbinger.com

For Immediate Release... 


                         HARBINGER CORPORATION ANNOUNCES
               RECORD THIRD QUARTER REVENUES AND OPERATING INCOME

         Atlanta, GA - October 23, 1997 - Harbinger Corporation (NASDAQ:HRBC) is
pleased to announce record revenues and operating income for the quarter ended
September 30, 1997. Unless otherwise noted, all comparisons with prior periods
reflect the effect of the retroactive restatement resulting from a
pooling-of-interests transaction with SupplyTech Inc., and affiliates ("STI")
which was completed on January 3, 1997. Revenues for the third quarter increased
37% to $21.5 million compared to pooled revenues of $15.7 million for the same
period last year. The net loss applicable to common shareholders for the third
quarter was $9.7 million or ($0.47) per share compared to the pooled net loss
applicable to common shareholders of $1.2 million or ($0.07) per share in the
same period in 1996. Operating income for the third quarter (excluding charges
for in-process product development and acquisitions) increased to $4.9 million
compared to pooled operating income of $849,000 a year ago. Net income from the
Company's core business (excluding the aforementioned charges, and the equity in
loss of Harbinger NET Services, LLC ("HNS") in 1996, net of related income
taxes) was $3.3 million or $0.15 per share as compared to pooled income of
$498,000 or $0.03 per share in the prior year.
         Compared to Harbinger Corporation's third quarter 1996 performance as
originally reported, revenue increased 93% from $11.2 million to $21.5 million
and operating income (excluding charges for in-process product development and
acquisitions) increased 171% from $1.8 million to $4.9 million. Net income for
the period from core operations (excluding the aforementioned charges, and the
equity in loss of HNS in 1996, net of related income taxes) as compared to
amounts originally reported increased 197% to $3.3 million or $0.15 per share
from $1.1 million or $0.06 per share one year earlier.
         Operating margins, excluding charges for in-process product development
and acquisitions, increased from 5.4% on a pooled basis and 16.1% as originally
reported in the third quarter of 1996 to 22.6% in the third quarter of 1997
primarily reflecting both increased operating leverage on higher revenues and
operating synergies realized from the STI merger. Active revenue generating
customers, representing customers to whom Harbinger provides products and
services on an ongoing basis, also reached a new record, increasing 74% over the
last 12 months to more than 46,000 at the end of the third quarter. This
increase includes approximately 9,000 additional customers as the result of the
STI merger.
         "We are pleased to announce another record quarter. "Not only did most
of our business units have a strong quarter, but Harbinger successfully raised
$60 million in a secondary offering and acquired ACQUION, Inc., a leading
supplier of Electronic Procurement Catalogs to major corporations," said C.
Tycho Howle, Chairman. Added Harbinger CEO David Leach, "While our revenue was
impacted somewhat by currency fluctuations and

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softness in some European markets, we are pleased we were able to meet our
earnings targets. Our SupplyTech and Enterprise Solutions Divisions, in
particular had strong growth rates over the prior years."

About Harbinger

         Harbinger Corporation is a world-leading, single-source provider of
Electronic Commerce and EDI solutions servicing over 46,000 software and network
customers. The company is dedicated to providing comprehensive and scalable
EC/EDI software and Value-Added Network services from desktops to mainframes,
and additionally meeting emerging market needs for Internet- and Web-based
commerce solutions. In addition to millions of EDI transactions, over $1.5
billion in Automated Clearing House (ACH) transfers flow through the Harbinger
Network each month. Harbinger is headquartered in Atlanta, Georgia and provides
worldwide support to customers with over 750 experienced employees in multiple
U.S. and overseas operations facilities. For information on Harbinger's full
line of products and services, please visit the World Wide Web at
www.Harbinger.com.

         This press release contains statements which may constitute
"forward-looking statements" within the meaning of the Securities Act of 1933
and the Securities Exchange Act of 1934, as amended by the Private Securities
Litigation Reform Act of 1995. 15 U.S.C.A. Sections 77Z-2 and 18U-5 (Supp.
1996). Those statements include statements regarding the intent, belief or
current expectations of Harbinger Corporation and members of its management as
well as the assumptions on which such statements are based. Prospective
investors are cautioned that any such forward-looking statements are not
guarantees of future performance and involve risks and uncertainties, and that
actual results may differ materially from those contemplated by such
forward-looking statements. Important factors currently known to management that
could cause actual results to differ materially from those in forward-looking
statements are set forth in the Safe Harbor Compliance Statement for
Forward-Looking Statements included as Exhibit 99.1 to the Company's Current
Report on Form 8-K dated and filed July 16, 1997. The Company undertakes no
obligation to update or revise forward-looking statements to reflect changed
assumptions, the occurrence of unanticipated events or changes to future
operating results over time.

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Harbinger and the Harbinger logo are registered trademarks of Harbinger
Corporation. All other company and product names referenced herein are
registered trademarks or trademarks of their respective owners.