F-SECURE CORPORATION'S SALES SLOWER THAN EXPECTED IN Q1

Espoo, Finland - March 15, 2001

The revenues of F-Secure Corporation will be lower than expected for the first quarter of this year. The reason for this development is the U.S. market situation that has been even weaker than expected.

The sales of F-Secure's North American theater have slowed down compared to 4Q2000 as customers have continued to postpone their investment in encryption technology. The North American theater revenues for 1Q2001 are expected to decline compared to 1Q2000. As a result, the Group's year-on-year revenue growth will only be 10-20%.

As sales decline quarter-on-quarter, the operating result will deteriorate compared to 4Q2000.

The visibility on the U.S. market remains at a low level. However, it is estimated that the market weakness will continue to have an impact on the second quarter as well. The Group's year-on-year growth in the second quarter is expected to remain at a low level.

F-Secure Corporation

Risto Siilasmaa
President, CEO

Additional information:
F-Secure Corporation
Risto Siilasmaa, President and CEO tel.358 9 2520 5510
Jukka Kotovirta, Director tel.358 9 2520 5542
Markku Pirskanen,CFO tel.358 9 2520 5606