Subscription of F-Secure shares with F-Secure 1998 and 2002 warrants

Helsinki, Finland - December 10, 2003

A total of 385,187 F-Secure shares were subscribed for with the B warrants and 141,646 F-Secure shares with the C warrants attached to the F-Secure 1998 Warrant Plan. A total of 5,000 F-Secure shares were subscribed for with the A1 warrants attached to the F-Secure 2002 Warrant Plan. The issue of the 1998 and 2002 Warrant Plan was approved by the Annual General Meeting of April 30, 1998 and March 27, 2002, respectively.

In aggregate the number of shares were increased by 531,833. The corresponding increase in the share capital, in total EUR 5,318,33 was registered in the Finnish Trade Register on December 10, 2003. As a result of the increase, the share capital of F-Secure currently is EUR 1,465,331.04 and the total number of shares is 146,533,104. F-Secure received as additional shareholders' equity a total of EUR 62,910,57.

The holders of the new shares are entitled to all shareholders' rights from the registration date. The Company has submitted an application for the new shares to be listed on the Helsinki Exchanges together with the other Company shares. The trading with the new shares will commence on December 11, 2003.

The subscription period for the B and C warrants of the F-Secure 1998 Warrant Plan began on 1 April 2001 and on 1 April 2002 and for the A1 warrants of the F-Secure 2002 Warrant Plan on November 1, 2003, respectively.

F-Secure Corporation

Risto Siilasmaa
President & CEO

Additional information:
F-Secure Corporation
Risto Siilasmaa, President and CEO tel.358 9 2520 5510
Taneli Virtanen, CFO tel.358 9 2520 5655

DISTRIBUTION
Helsinki Exchanges
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