<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
(Replace this text with the legend)
</LEGEND>
<CIK> 0001028285
<NAME> Corsair Communications, Inc.
<MULTIPLIER> 1,000
<CURRENCY> US Dollars
<S> <C>
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<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
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<BONDS> 0
0
0
<COMMON> 18
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<EPS-BASIC> .52
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</TABLE>