<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> DEC-31-1998
<CASH> 7,708
<SECURITIES> 2,833
<RECEIVABLES> 6,229
<ALLOWANCES> (378)
<INVENTORY> 0
<CURRENT-ASSETS> 18,122
<PP&E> 4,544
<DEPRECIATION> (2,004)
<TOTAL-ASSETS> 21,574
<CURRENT-LIABILITIES> 13,141
<BONDS> 0
0
0
<COMMON> 125
<OTHER-SE> (24,480)
<TOTAL-LIABILITY-AND-EQUITY> 21,574
<SALES> 12,219
<TOTAL-REVENUES> 12,219
<CGS> 4,653
<TOTAL-COSTS> 23,012
<OTHER-EXPENSES> (215)
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 267
<INCOME-PRETAX> (15,498)
<INCOME-TAX> (57)
<INCOME-CONTINUING> 0
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (15,441)
<EPS-BASIC> (3.49)
<EPS-DILUTED> (3.49)
</TABLE>