Subscription of F-Secure shares with F-Secure 1998, 1999 II and 1999 III warrants

A total of 203,152 F-Secure shares were subscribed for with the C warrants attached to the F-Secure 1998 Warrant Plan. A total of 200,684 F Secure shares were subscribed for with the 2001B warrants, with the 2001C warrants, with the 2001D warrants and with the 2002A warrants attached to the F Secure 1999 II Warrant Plan. A total of 106,266 F-Secure shares were subscribed for with the 2001B warrants and with the 2001D warrants attached to the F-Secure 1999 III Warrant Plan. The issue of the 1998 Warrant Plan was approved by the Annual General Meeting of April 30, 1998, and the issue of the 1999 II and 1999 III Warrant Plan was approved by the Annual General Meeting of August 10, 1999, respectively.

In aggregate the number of shares were increased by 510,102. The corresponding increase in the share capital, in total EUR 5,101.02 was registered in the Finnish Trade Register on October 20, 2004. As a result of the increase, the share capital of F-Secure currently is EUR 1,487,652.30 and the total number of shares is 148,765,230. F Secure received as additional shareholders' equity a total of EUR 309,363.42.

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 October 21, 2004.

The subscription period for the C warrants of the F-Secure 1998 Warrant Plan began on 1 April 2002. The subscription period for the 2001B warrants began on 1 July 2002, for the 2001C warrants on 1 October 2002, for the 2001D warrants on 1 January 2003 and for the 2002A warrants on 1 April 2003 of the 1999 II Warrant Plan. The subscription period for the 2001B warrants began on 1 July 2002 and for the 2001D warrants on 1 January 2003 of the 1999 III Warrant Plan, 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