<ARTICLE>                     5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM KANA
COMMUNICATIONS, INC. 10K/A AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>                                   1,000

                                                           
<PERIOD-TYPE>                                  YEAR              YEAR
<FISCAL-YEAR-END>                              DEC-31-1999       DEC-31-1998
<PERIOD-START>                                 JAN-01-1999       JAN-01-1998
<PERIOD-END>                                   DEC-31-1999       DEC-01-1998
<CASH>                                              18,695            13,875
<SECURITIES>                                        34,522               160
<RECEIVABLES>                                        5,021               957
<ALLOWANCES>                                           366               110
<INVENTORY>                                              0                 0
<CURRENT-ASSETS>                                    59,908            15,032
<PP&E>                                               8,360             1,493
<DEPRECIATION>                                       1,531               328
<TOTAL-ASSETS>                                      70,229            16,876
<CURRENT-LIABILITIES>                               21,317             3,199
<BONDS>                                                  0                 0
<PREFERRED-MANDATORY>                                    0                 0
<PREFERRED>                                              0                13
<COMMON>                                                61                19
<OTHER-SE>                                          48,500            12,951
<TOTAL-LIABILITY-AND-EQUITY>                        70,229            16,876
<SALES>                                             10,536             2,014
<TOTAL-REVENUES>                                    14,064             2,347
<CGS>                                                  271                54
<TOTAL-COSTS>                                       14,455           125,182
<OTHER-EXPENSES>                                     2,163                97
<LOSS-PROVISION>                                         0                 0
<INTEREST-EXPENSE>                                   2,079                88
<INCOME-PRETAX>                                          0                 0
<INCOME-TAX>                                             0                 0
<INCOME-CONTINUING>                                      0                 0
<DISCONTINUED>                                           0                 0
<EXTRAORDINARY>                                          0                 0
<CHANGES>                                                0                 0
<NET-INCOME>                                      (118,743)          (12,601)
<EPS-BASIC>                                          (4.61)            (2.01)
<EPS-DILUTED>                                        (4.61)            (2.01)