<PAGE>   1
                                    FORM 10-Q


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



              [X] QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934



      For the Quarter ended MARCH 31, 1999  Commission file number:0-16641



                           RAINBOW TECHNOLOGIES, INC.
             (Exact name of Registrant as specified in its charter)



           DELAWARE                                  95-3745398
    (State of incorporation)            (I.R.S. Employer Identification No.)



                  50 TECHNOLOGY DRIVE, IRVINE, CALIFORNIA 92618
               (Address of principal executive offices) (Zip Code)



Indicate by check mark whether the Registrant (i) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the Registrant was
required to file such reports), and (ii) has been subject to such filing
requirements for the past 90 days.


                                                          Yes   [X]     No   [ ]

The number of shares of common stock, $.001 par value, outstanding as of May 10,
1999 was 11,281,574.

<PAGE>   2

                           RAINBOW TECHNOLOGIES, INC.


                                TABLE OF CONTENTS


<TABLE>
<S>                                                                                   <C>
 PART I  -  FINANCIAL INFORMATION

 Item 1. Condensed Consolidated Financial Statements

         Condensed Consolidated Balance Sheets at
         March 31, 1999 (unaudited) and December 31, 1998                              4

         Condensed Consolidated Statements of Income for the three months ended 
         March 31, 1999 and 1998 (unaudited)                                           5

         Condensed Consolidated Statements of Comprehensive Income (Loss) for
         the three months ended March 31, 1999 and 1998 (unaudited)                    6

         Condensed Consolidated Statements of Cash Flows
         for the three months ended March 31, 1999 and 1998 (unaudited)                7

         Notes to Condensed Consolidated Financial Statements                          8

 Item 2.      Management's Discussion and Analysis of
           Financial Condition and Results of Operations                              11

PART II  - OTHER INFORMATION

         Item 1 to 5 - Not applicable

         Item 6. Exhibits and reports on Form 8K                                      16

 SIGNATURES                                                                           16
</TABLE>



                                        2
<PAGE>   3

INTRODUCTORY NOTE

   The Quarterly Report on Form 10-Q contains certain 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 and the Company intends that such
forward-looking statements be subject to the safe harbors created thereby. These
forward-looking statements include (i) the existence and development of the
Company's technical and manufacturing capabilities, (ii) anticipated
competition, (iii) potential future growth in revenues and income, (iv)
potential future decreases in costs, and (v) the need for, and availability of
additional financing.

   The forward-looking statements included herein are based on current
expectations that involve a number of risks and uncertainties. These
forward-looking statements are based on the assumption that the Company will not
lose a significant customer or customers or experience increased fluctuations of
demand or rescheduling of purchase orders, that the Company's markets will
continue to grow, that the Company's products will remain accepted within their
respective markets and will not be replaced by new technology, that competitive
conditions within the Company's markets will not change materially or adversely,
that the Company will retain key technical and management personnel, that the
Company's forecasts will accurately anticipate market demand, that there will be
no material adverse change in the Company's operations or business and that the
Company will not experience significant supply shortages with respect to
purchased components, sub-systems or raw materials. Assumptions relating to the
foregoing involve judgments with respect to, among other things, future
economic, competitive and market conditions, and future business decisions, all
of which are difficult or impossible to predict accurately and many of which are
beyond the control of the Company. In addition, the business and operations of
the Company are subject to substantial risks which increase the uncertainty
inherent in the forward-looking statements. In light of the significant
uncertainties inherent in the forward-looking information included herein, the
inclusion of such information should not be regarded as a representation by the
Company or any other person that the objectives or plans of the Company will be
achieved.



                                       3
<PAGE>   4

                           RAINBOW TECHNOLOGIES, INC.
                      CONDENSED CONSOLIDATED BALANCE SHEETS
                                   A S S E T S

<TABLE>
<CAPTION>
                                                                                       March 31, 1999    December 31, 1998
                                                                                       --------------    -----------------
                                                                                        (unaudited)
<S>                                                                                    <C>               <C>          
Current assets:
 Cash and cash equivalents ......................................................      $  22,820,000       $  29,900,000
 Marketable securities available-for-sale .......................................          4,959,000           6,495,000
 Accounts receivable, net of allowance for doubtful accounts
  of $278,000 and $291,000 in 1999 and 1998, respectively .......................         18,578,000          20,753,000
 Inventories ....................................................................         10,380,000          10,891,000
 Unbilled costs and fees ........................................................          1,834,000           2,740,000
 Prepaid expenses and other current assets ......................................          6,176,000           3,815,000
                                                                                       -------------       -------------
      Total current assets ......................................................         64,747,000          74,594,000
Property, plant and equipment, at cost:
 Buildings ......................................................................          7,944,000           8,580,000
 Furniture ......................................................................          1,414,000           1,338,000
 Equipment ......................................................................         14,754,000          13,738,000
 Leasehold improvements .........................................................          1,439,000           1,177,000
                                                                                       -------------       -------------
                                                                                          25,551,000          24,833,000
 Less accumulated depreciation and amortization .................................          9,510,000           8,873,000
                                                                                       -------------       -------------
      Net property, plant and equipment .........................................         16,041,000          15,960,000
Goodwill, net of accumulated amortization of $11,532,000 and
  $11,731,000 in 1999 and 1998, respectively ....................................          5,757,000           6,318,000
Product licenses, net of accumulated amortization of $1,351,000
  and $1,190,000 in 1999 and 1998, respectively .................................          5,683,000           5,855,000
Other assets, net of accumulated amortization of $1,792,000
  and $1,463,000 in 1999 and 1998, respectively .................................          6,631,000           7,026,000
                                                                                       -------------       -------------
                                                                                       $  98,859,000       $ 109,753,000
                                                                                       =============       =============

                      LIABILITIES AND SHAREHOLDERS' EQUITY

Current liabilities:
 Accounts payable ...............................................................      $   4,180,000       $   5,542,000
 Accrued payroll and related expenses ...........................................          2,780,000           5,150,000
 Other accrued liabilities ......................................................          3,513,000           3,861,000
 Long-term debt, due within one year ............................................            255,000             278,000
                                                                                       -------------       -------------
      Total current liabilities .................................................         10,728,000          14,831,000
Long-term debt, net of current portion ..........................................          1,277,000           1,458,000
Other liabilities ...............................................................          1,147,000           1,263,000
Shareholders' equity:
 Common stock, $.001 par value, 20,000,000 shares authorized, 11,761,373 and
   11,773,595 shares issued and outstanding in 1999 and 1998,
   respectively .................................................................             12,000              12,000
 Additional paid-in capital .....................................................         29,563,000          30,335,000
Accumulated other comprehensive loss ............................................         (1,384,000)           (447,000)
Retained earnings ...............................................................         63,586,000          62,301,000
                                                                                       -------------       -------------
                                                                                          91,777,000          92,201,000
Less cost of treasury shares (425,000 shares) ...................................         (6,070,000)                 --
                                                                                       -------------       -------------
     Total shareholders' equity .................................................         85,707,000          92,201,000
                                                                                       -------------       -------------
                                                                                       $  98,859,000       $ 109,753,000
                                                                                       =============       =============
</TABLE>



                             See accompanying notes.


                                       4
<PAGE>   5

                           RAINBOW TECHNOLOGIES, INC.
                   CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                                   (Unaudited)

<TABLE>
<CAPTION>
                                                                       Three months ended
                                                               March 31, 1999     March 31, 1998
                                                               ---------------------------------
<S>                                                            <C>                <C>         
Revenues:
  Software protection products ...........................      $ 14,275,000       $ 14,171,000
  Information security products ..........................        11,049,000         10,801,000
  Internet security products .............................           735,000             48,000
  Ion beam surface treatment .............................            27,000             10,000
                                                                -------------------------------
       Total revenues ....................................        26,086,000         25,030,000
Operating expenses:
  Cost of software protection products ...................         3,994,000          3,555,000
  Cost of information security products ..................        10,270,000          8,573,000
  Cost of internet security products .....................           442,000             32,000
  Cost of ion beam surface treatment .....................            26,000             20,000
  Selling, general and administrative ....................         6,553,000          5,968,000
  Research and development ...............................         2,629,000          2,722,000
  Goodwill amortization ..................................           620,000            557,000
  Acquired research and development ......................                --          1,500,000
                                                                -------------------------------
       Total operating expenses ..........................        24,534,000         22,927,000
                                                                -------------------------------
Operating income .........................................         1,552,000          2,103,000
Interest income ..........................................           302,000            319,000
Interest expense .........................................           (50,000)           (56,000)
Other income (expense), net ..............................           272,000         (1,134,000)
                                                                -------------------------------
Income before provision for taxes ........................         2,076,000          1,232,000
Provision for income taxes ...............................           791,000          1,851,000
                                                                -------------------------------
Net income (loss) ........................................      $  1,285,000       $   (619,000)
                                                                ===============================

Net income (loss) per share:
  Basic ..................................................      $       0.11       $      (0.05)
                                                                ===============================
  Diluted ................................................      $       0.10       $      (0.05)
                                                                ===============================

Shares used in computing net income (loss) per share:
  Basic ..................................................        11,804,000         11,650,500
                                                                ===============================

  Diluted ................................................        12,628,000         11,650,500
                                                                ===============================
</TABLE>


                             See accompanying notes.



                                       5
<PAGE>   6

                           RAINBOW TECHNOLOGIES, INC.
        CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
                                   (unaudited)

<TABLE>
<CAPTION>
                                                                  Three Months Ended
                                                            March 31, 1999    March 31, 1998
                                                            --------------    --------------
<S>                                                         <C>               <C>         
Net income (loss) .....................................      $ 1,285,000       $  (619,000)
Other comprehensive income:
   Foreign currency translation adjustment ............       (1,466,000)          805,000
   Unrealized gain (loss) on securities ...............          (45,000)           (7,000)
   Reclassification adjustment ........................               --            (6,000)
                                                             -----------------------------
   Other comprehensive  income (loss),
     before income taxes ..............................       (1,511,000)          792,000
   Provision for income taxes related to other
     comprehensive income (loss) ......................          574,000          (309,000)
                                                             -----------------------------
   Other comprehensive income (loss), net of taxes ....         (937,000)          483,000
                                                             -----------------------------
 Comprehensive income (loss) ..........................      $   348,000       $  (136,000)
                                                             =============================
</TABLE>



                             See accompanying notes.


                                       6
<PAGE>   7

                           RAINBOW TECHNOLOGIES, INC.
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (unaudited)

<TABLE>
<CAPTION>
                                                                             Three Months Ended

                                                                      March 31, 1999     March 31, 1998
                                                                      --------------     --------------
<S>                                                                   <C>                <C>          
Cash flows from operating activities:
 Net income .....................................................      $  1,285,000       $   (619,000)
 Adjustments to reconcile net income to net cash
  provided by operating activities:
  Amortization ..................................................         1,198,000            717,000
  Depreciation ..................................................           864,000            698,000
  Change in deferred income taxes ...............................          (740,000)          (817,000)
  Allowance for doubtful accounts ...............................            (6,000)          (123,000)
  Loss from retirement of property, plant, and equipment ........            (2,000)            (3,000)
  Write-down of long-term investment ............................                --          1,320,000
  Write-off of capitalized software .............................                --            784,000
  Minority interest in subsidiary's earnings ....................          (195,000)          (186,000)
  Write-off of in-process research and development ..............                --          1,500,000
  Provision for restructured operations .........................                --            370,000
  Changes in operating assets and liabilities:
   Accounts receivable ..........................................         1,783,000         (1,288,000)
   Inventories ..................................................           419,000          1,712,000
   Unbilled costs and fees ......................................           906,000            597,000
   Prepaid expenses and other current assets ....................        (1,117,000)            64,000
   Accounts payable .............................................        (1,287,000)        (1,064,000)
   Accrued liabilities ..........................................        (2,688,000)        (3,589,000)
   Deferred revenues ............................................           (89,000)           169,000
   Income taxes payable .........................................          (320,000)          (214,000)
                                                                       -------------------------------
     Net cash provided by operating activities ..................            11,000             28,000
Cash flows from investing activities:
 Purchase of marketable securities ..............................                --         (1,300,000)
 Sale of marketable securities ..................................         1,536,000          4,152,000
 Purchases of property, plant, and equipment ....................        (1,478,000)          (812,000)
 Net cash paid for acquisition of Wyatt River Software, Inc. ....                --         (7,239,000)
 Other non-current assets .......................................           245,000           (522,000)
 Capitalized software development costs .........................          (200,000)          (211,000)
                                                                       -------------------------------
     Net cash provided by (used in) investing activities ........           103,000         (5,932,000)
Cash flows from financing activities:
 Exercise of Rainbow common stock options .......................           647,000            491,000
 Payment of long-term debt ......................................           (76,000)           (68,000)
 Purchase of treasury stock .....................................        (6,070,000)          (149,000)
 Purchase and retirement of common stock ........................        (1,419,000)          (179,000)
                                                                       -------------------------------
    Net cash provided by (used in) financing activities .........        (6,918,000)            95,000
Effect of exchange rate changes on cash .........................          (276,000)           501,000
                                                                       -------------------------------
Net decrease in cash and cash equivalents .......................        (7,080,000)        (5,308,000)
Cash and cash equivalents at beginning of period ................        29,900,000         29,556,000
                                                                       -------------------------------
Cash and cash equivalents at end of period ......................      $ 22,820,000       $ 24,248,000
                                                                       ===============================

Supplemental disclosure of cash flow information:
 Income taxes paid ..............................................      $    117,000       $  2,004,000
 Interest paid ..................................................            53,000             56,000
</TABLE>



                             See accompanying notes.



                                       7
<PAGE>   8

                           RAINBOW TECHNOLOGIES, INC.
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                 MARCH 31, 1999
                                   (Unaudited)

1.  Basis of presentation

Rainbow Technologies, Inc. (the Company) develops, manufactures, programs and
markets products which prevent the unauthorized use of intellectual property,
including software programs; develops and manufactures information security
products for satellite communications; and develops and manufactures internet
security products to provide privacy and security for network communications.
The accompanying financial statements consolidate the accounts of the Company
and its wholly-owned subsidiaries. All significant intercompany balances and
transactions have been eliminated. Certain amounts previously reported have been
reclassified to conform with the 1999 presentation. Share amounts for all
periods presented have been adjusted to reflect the impact of a 3-for-2 stock
split effective July 1, 1998

In the opinion of the Company's management, the accompanying condensed
consolidated financial statements include all adjustments, consisting only of
normal recurring adjustments, necessary for a fair presentation of the financial
position at March 31, 1999 and results of operations for the three months ended
March 31, 1999 and 1998. The condensed consolidated financial statements do not
include footnotes and certain financial information normally presented annually
under generally accepted accounting principles and, therefore, should be read in
conjunction with the Company's December 31, 1998 Annual Report on Form 10-K.
Results of operations for the three months ended March 31, 1999 are not
necessarily indicative of results to be expected for the full year.


The Company has subsidiaries in the United Kingdom, Germany, France, the
Netherlands, India, Russia, Australia, China and Taiwan. The Company utilizes
the currencies of the countries where its foreign subsidiaries operate as the
functional currency. Balance sheet accounts denominated in foreign currency are
translated at exchange rates as of the date of the balance sheet and income
statement accounts are translated at average exchange rates for the period.
Translation gains and losses are accumulated as a separate component of
Accumulated Other Comprehensive Income within Shareholders' Equity. The Company
has adopted local currencies as the functional currencies for its subsidiaries
because their principal economic activities are most closely tied to the
respective local currencies.

As of January 1, 1998, the Company adopted Statement 130, "Reporting
Comprehensive Income" (SFAS No. 130). SFAS No. 130 establishes new rules for the
reporting and display of comprehensive income and its components; however, the
adoption of this Statement had no impact on the Company's net income or
shareholders' equity. SFAS 130 requires unrealized gains or losses on the
Company's available-for-sale securities and foreign currency translation
adjustments, which prior to adoption were reported separately in shareholders'
equity to be included in other comprehensive income. During the three months
ended March 31, 1999 total comprehensive income amounted to $348,000 while
during the three months ended March 31, 1998 total comprehensive loss amounted
to $136,000.


2.  Earnings per share

Basic earnings per share is computed by dividing income available to common
shareholders by the weighted-average number of common shares outstanding for the
period. Diluted earnings per share reflects the assumed conversion of all
diluted securities.



                                       8
<PAGE>   9

3.  Government Contracts

The Company is both a prime contractor and a subcontractor under fixed-price and
cost-plus-fixed-fee contracts with the U.S. Government (Government). At the
commencement of each contract or contract modification, the Company submits
pricing proposals to the Government to establish indirect cost rates applicable
to such contracts. These rates, after audit and approval by the Government, are
used to settle costs on contracts completed during the previous fiscal year.

To facilitate interim billings during the performance of its contracts, the
Company establishes provisional billing rates, which are used in recognizing
contract revenue and contract accounts receivable amounts in these financial
statements. These provisional billing rates are adjusted to actual at year-end
and are subject to adjustment after Government audit.


4.  Inventories

Inventoried costs relating to long-term contracts are stated at the actual
production costs, including pro-rata allocations of factory overhead and general
and administrative costs incurred to date, reduced by amounts identified with
revenue recognized on units delivered. The costs attributed to units delivered
under such long-term contracts are based on the estimated average cost of all
units expected to be produced.

Inventories, other than inventoried costs relating to long-term contracts, are
stated at the lower of cost (first-in, first-out basis) or market. Inventories
consist of the following:

<TABLE>
<CAPTION>
                                         March 31,1999   December 31, 1998
                                         -------------   -----------------
<S>                                      <C>             <C>        
           Inventoried costs related
             to long-term contracts       $ 4,431,000      $ 5,237,000
           Finished goods                   3,616,000        4,426,000
           Raw materials                      820,000          917,000
           Work in process                  1,513,000          311,000
                                          -----------      -----------
                                          $10,380,000      $10,891,000
                                          ===========      ===========
</TABLE>


5.  Acquisitions

On February 26, 1998, the Company completed the acquisition of Wyatt River
Software, Inc. (Wyatt). Wyatt develops, manufactures, and markets network
license management software. The total transaction value was $9 million,
including $3.9 million paid in cash to Wyatt stockholders and $5.1 million in
assumed liabilities. The Company may be required to pay Wyatt shareholders an
additional sum of up to $2 million based upon sales of the Wyatt technology
through June 30, 1999. This acquisition has been accounted for under the
purchase method of accounting. The purchase price has been allocated based upon
estimated fair values at the date of acquisition. Approximately $1.5 million of
the purchase price was written off as in-process research and development at the
acquisition date, approximately $2.7 million was allocated to developed
software, and the remaining $4.8 million was allocated to goodwill and other
intangibles. The goodwill and other intangibles are being amortized on a
straight-line basis over five years.

On March 6, 1998, the Company entered into an agreement to purchase certain
assets from Elan Computer Group, Inc. (Elan) for $800,000. The assets included
Elan's license manager software technology, which the Company had previously
licensed from Elan, and Elan's end-user maintenance and support relationships.
In connection with the transaction, the Company entered into a Litigation
Cooperation Agreement with Elan in connection with a patent infringement lawsuit
entitled Globetrotter Software, Inc. vs. Elan Computer Group, Inc. No. 97-4176CW
which is currently pending in the United States District court for the Northern
District of California. The action claims that the Elan technology infringes
upon patents owned by Globetrotter. The lawsuit is deemed to include any and all
claims made now or in the future by Globetrotter Software, Inc. The Company does
not expect that this matter will have a material adverse effect on its financial
position or results of operations. Prior to the asset purchase agreement with
Elan, the Company had an investment in Elan of $1.3 million. The Company owned
less than 20% of Elan's 



                                       9
<PAGE>   10

stock and accounted for the investment under the cost method. During the first
quarter of 1998 the Company wrote-off its investment in Elan, as it was
determined that the Company's original investment was fully impaired. The
write-off is included in other income (expense), net in the income statement for
the quarter ended March 31, 1998.


6.  Other assets

Included in other assets are certain investments in early-stage companies. The
Company closely monitors the operations and cash flows of these companies to
evaluate their status and ensure that amounts reported for these investments do
not exceed net realizable value. If the Company determines that impairment in
the investment of any such company exists, an adjustment would be made to reduce
the investment amount to net realizable value.

Also included in other assets are capitalized software development costs. Based
on the Company's product development process, technological feasibility is
established upon completion of a working model. Amortization of capitalized
software development costs commence when the products are available for general
release to customers and are determined using the straight line method over the
expected useful lives of the respective products. These amounts are written-off
if it is determined that the projects can not be brought to market.


7.  Stock split

On March 17, 1998 the Company announced that its Board of Directors approved a
3-for-2 split of its common stock. The effective date was July 1, 1998 and the
payout date was July 15, 1998. These financial statements have been adjusted to
reflect the impact of the stock split.


8.      Subsequent Event

On May 11, 1999 the Company acquired Systematic Systems Integration, Inc.
(Systematic Systems) in a cash transaction valued at approximately $9.5 million.
Systematic Systems is a leading California-based eCommerce integration services
firm enabling companies to seamlessly integrate diverse software and hardware
platforms, communication systems and Internet technologies.



                                       10
<PAGE>   11

                           RAINBOW TECHNOLOGIES, INC.
                     MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                  FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following is management's discussion and analysis of certain significant
factors which have affected the consolidated results of operations and the
consolidated financial position of the Company during the periods included in
the accompanying condensed consolidated financial statements. This discussion
should be read in conjunction with the related condensed consolidated financial
statements and associated notes.



RESULTS OF OPERATIONS
(dollars in thousands)

<TABLE>
<CAPTION>
                                                    Three Months Ended
                                                         March 31,
                                                  -----------------------
                                                    1999           1998
                                                  --------       --------
<S>                                               <C>            <C>     
           Revenues
                Software Protection               $ 14,275       $ 14,171
                Information Security                11,049         10,801
                Internet Security                      735             48
                Ion Beam Surface Treatment              27             10
                                                  --------       --------
                     Total revenues               $ 26,086       $ 25,030
                                                  ========       ========

           Operating Income
                Software Protection               $  2,665       $  1,815
                Information Security                   571          2,140
                Internet Security                   (1,262)        (1,564)
                Ion Beam Surface Treatment            (422)          (288)
                                                  --------       --------
                      Total operating income      $  1,552       $  2,103
                                                  ========       ========
</TABLE>


REVENUES

Revenues from Software Protection Products for the three months ended March 31,
1999 increased by 1% to $14,275,000, when compared to the same period in 1998.
The overall business has been impacted by the economic problems in Asia and
other emerging markets as well as by the erosion of average selling prices.
Revenues from Europe increased by 14% while revenues from the U.S. decreased by
12%. The decrease in U.S. revenues is due to slower sales to U.S. customers who
export their products to Asia. The average selling price per product in the
quarter ended March 31, 1999 increased approximately 9% when compared to the
same period in 1998. Unit volume for the three months ended March 31, 1999
decreased by 10% when compared to the corresponding period in 1998. The increase
in average selling prices and the decrease in unit volume is primarily due to a
change in customer mix.

Information Security Products revenue for the three months ended March 31, 1999
increased 2% to $11,049,000 when compared to the same period in 1998. The
revenue growth was primarily due to a higher demand for network security
products.



                                       11
<PAGE>   12

Internet Security Products revenue for the three months ended March 31, 1999
increased 1,431% to $735,000 when compared to the same period in 1998. The
revenue growth was primarily due to the increase in sales of Cryptoswift
products.


GROSS PROFIT

Gross profit from Software Protection Products for the three months ended March
31, 1999 decreased to 72% of revenues compared to 75% of revenues for the
corresponding period in 1998. The decrease in gross profit was due to higher
costs of sales as a result of increased labor, overhead and non-recurring
engineering expenses.

Gross profit from Information Security Products for the three months ended March
31, 1999 decreased to 7% of revenues compared to 21% for the three months ended
March 31, 1998. The decrease was due to change in mix from more profitable
product contracts to less profitable research and development contracts.

Gross profit from Internet Security Products for the three months ended March
31, 1999 increased to 40% of revenues compared to 33% for the three months ended
March 31, 1998. The increase in gross profit was due to a decrease in unit
costs.


SELLING, GENERAL AND ADMINISTRATIVE

Selling, general and administrative expenses for the quarter ended March 31,
1999 were 25% of revenues compared with 24% of revenues for the quarter ended
March 31, 1998. Selling, general and administrative expenses for the quarter
ended March 31, 1999 increased by $585,000 as compared with 1998. This increase
was primarily due to additional staff and higher marketing expenses for new
product introductions in software protection and internet security products.


RESEARCH AND DEVELOPMENT

Total research and development expenses for the three months ended March 31,
1999 decreased by 3% when compared to the corresponding 1998 period. The
decrease in research and development expenses was due primarily to the deferral
of non-recurring engineering expenses related to several projects.


ACQUIRED RESEARCH AND DEVELOPMENT

During the quarter ended March 31, 1998, the Company wrote-off $1,500,000 of
in-process research and development acquired in the Wyatt River Software, Inc.
("Wyatt") acquisition.


OTHER INCOME (EXPENSE)

Other income was $272,000 for the quarter ended March 31, 1999 compared to other
expense of $1,134,000 for the quarter ended March 31, 1998. During the first
quarter of 1998, the Company wrote-off a $1,320,000 investment which was
determined to be fully impaired.


PROVISION FOR INCOME TAXES

The effective tax rate was 38% for the three months ended March 31, 1999. The
effective tax rate in the first three months of 1998 was negatively affected due
to the non-deductibility of the charges related to the acquired in-



                                       12
<PAGE>   13

process research and development. Excluding the effect of these charges, the
effective tax rate was 39% for the three months ended March 31, 1998


LIQUIDITY AND CAPITAL RESOURCES

The Company's principal sources of operating funds have been from operations and
proceeds from sales of the Company's equity securities. The Company's cash flow
from operations for the three months ended March 31, 1999 and 1998 were $11,000
and $28,000, respectively.

Net cash provided by investing activities for the three months ended March 31,
1999 was $103,000 while net cash used in investing activities for the three
months ended March 31, 1998 was $5,932,000. Investing activities in 1998
included the acquisition of Wyatt River Software and certain assets of Elan
Computer Group.

The Company intends to use its capital resources to expand its product lines and
for possible acquisitions of additional products and technologies. The Company
has no significant capital commitments or requirements at this time.

The Company's subsidiary in France carry approximately $9,900,000 in interest
earning deposits which may result in foreign exchange gains or losses due to the
fact that the functional currency in those subsidiaries is not the U.S. dollar.

The Company believes that its current working capital of $54,019,000 and
anticipated working capital to be generated by future operations will be
sufficient to support the Company's working capital requirements for at least
the next twelve months.


IMPACT OF YEAR 2000

The Year 2000 issue exists because many computer systems, applications and
embedded microprocessors use two rather than four digits to define the
applicable year. Because this issue has the potential to disrupt the Company's
business operations, a comprehensive, company wide, Year 2000 program was
initiated to identify and remediate the potential issues surrounding the Year
2000 problem. The Year 2000 program addresses the problems that may arise in
computer technologies, which include both information technology ("IT") and
non-IT systems, and those Year 2000 issues related to third parties with which
the Company has a material relationship.

One of the Company's first priorities was communicating to customers the Year
2000 compliance status of the Company's products. To aid in this effort, the
Company developed an Internet web site that describes the type of date-related
processing in the products (if any), which products have been tested for Year
2000 compliance, and the results of that testing. The site is updated as new
products and new information become available. In addition, the Company's Year
2000 program includes a process for responding to customer inquiries and for
handling special customer requests.

For the purposes of process management and progress reporting, the Year 2000
program activities are divided into 5 phases, some of which are being conducted
concurrently:

AWARENESS - This phase included definition of the systems, project and scope,
overall approach, determination of teams, briefings, and setting of a compliance
standard. The awareness phase has been completed.

ASSESSMENT - The assessment phase included the development of a comprehensive
inventory and assessment of the criticality of systems, prioritization,
determination of resource requirements, and estimation of costs. General
decisions were made about modification, re-engineering, replacement or removal
of systems and business partners. The validation approach and schedule was
determined.

RENOVATION: The renovation phase includes the re-engineering, replacement, or
retirement of systems. Test plans are developed for revised and replaced
systems.



                                       13
<PAGE>   14

VALIDATION: Tests are run in an isolated test environment to determine
functionality.

IMPLEMENTATION: In this phase, the implementation dates are scheduled, and the
need for parallel processing, back-up, recovery and contingency plans are
determined. Following implementation, there is a review for effectiveness.


STATE OF READINESS

IT and Non-IT Systems

The Company's IT systems principally consist of business information systems
(such as mainframe and other shared computers and associated business
application software) and infrastructure (such as personal computers, operating
systems, networks and devices like switches and routers). As of March 31, 1999,
the inventory of these systems is complete and the assessment and validation of
systems deemed "business critical" is more than 75% complete. The implementation
of upgraded, renovated or replacement business critical systems is scheduled to
be completed by June, 1999. All of the remaining, non-critical, IT systems are
being evaluated on the basis of tests (if deemed necessary), and manufacturer
statements regarding Year 2000 compliance. The Company expects that the
assessment and, when required, renovation or replacement of all IT systems will
be completed in time to ensure no significant adverse effect on business
operations.

Non-IT systems are those business tools that may contain embedded
microprocessors, such as elevators, phones, security systems and climate control
systems. The inventory of these items is completed and the vendors have been
contacted to obtain Year 2000 compliance information. The decision to remediate,
replace or otherwise address equipment that poses a material Year 2000 impact is
based primarily upon analysis of the information received from the manufacturer.
To date, more than 85% of the manufacturers have responded and indicated that no
Year 2000 related problems will be experienced with the equipment as provided.
The Company anticipates completion, in all material respects, of the non-IT
infrastructure portion of its program by June 1999.

EXTERNAL RELATIONSHIPS

The Company also faces a potential risk should one or more of its principal
suppliers, service providers or other parties with whom the Company has a
material business relationship suffer a Year 2000 related problem. A
comprehensive inventory of business partners was made, and the Company has
initiated contact with them in an effort to determine their state of readiness.
Assessment of the risk posed to the Company will be based on the level of
criticality to the Company (the potential business impact, available
alternatives and resources required to replace) and the response received from
each party. A cut-off date has been assigned to each business critical third
party by which time that company must be assessed as "Year 2000 Ready" or a
contingency plan will be implemented to ensure the Company will suffer no
material impact to its ability to provide products and services to customers.
Approximately 1300 companies were contacted, about 100 of which are considered
business critical, and to-date more than 50% of the total and more than 60% of
the business critical suppliers have responded. The Company anticipates that
this evaluation will be ongoing through 1999.

Contingency Planning

The Company recognizes the need for contingency planning in those areas where it
known, or is reasonably likely that an event or an uncertainty will create a
Year 2000 system-related failure with a significant negative impact on its
business operations. The Company has identified the date by which each business
critical IT system, non-IT system, and business partner must be validated for
Year 2000 readiness, and by which a contingency plan must be implemented to
ensure uninterrupted business operations. Contingency planning is expected to be
completed for each of these systems no later than that date, and in all cases,
no later than October 1999.

COSTS

The Company has incurred approximately $548,000 as of March 31, 1999, to address
its Year 2000 issues. The Company presently estimates that the total cost of
addressing its Year 2000 issues will be approximately $750,000 to $1,000,000.
This estimate was derived utilizing numerous assumptions. First, the current
staff is adequate to



                                       14
<PAGE>   15

finish the project. Second, the product is already Year 2000 compliant. Next, to
the best of its knowledge, the Company estimates that approximately half of the
work is already done and that no system changes are anticipated. However, there
can be no guarantee that these assumptions are accurate, and actual results
could differ materially from those anticipated.

RISKS

The Company's Year 2000 program is designed to discover and remediate or reduce
the risks associated with the Year 2000 issue. The Company anticipates that it
will complete the remediation, risk assessment and contingency planning for its
internal IT and non-IT systems, and immediate, business critical third-party
providers. The most reasonably likely worst case scenario involves the
disruption of operations caused by the Company's reliance upon a network of
critical suppliers (such as utility, telecommunications, and transportation
service providers) whose own systems unexpectedly fail. While such failures
could directly or indirectly affect important operations of the Company, in a
significant manner, the Company does not have sufficient information about or
control over its third party suppliers to determine either the likelihood or
potential costs of these failures. Accordingly, the costs and results of the
Company's Year 2000 program and the extent of the impact on operations could
materially differ from the Company's expectations.



                                       15
<PAGE>   16

PART II        OTHER INFORMATION

Item 6         Exhibits and Reports on Form 8-K

      (a)      Exhibits

               27 Financial Data Schedule

      (b)      Reports on Form 8-K
               None


                                   SIGNATURES


Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereto duly authorized.


Dated: May 12, 1999

                                             RAINBOW TECHNOLOGIES, INC.


                                             By:

                                                 /s/ Patrick Fevery
                                                 -------------------------
                                                 Chief Financial Officer

                                       16