Internet Security - F-Secure

Announcement pursuant to Secureties Act, Chapter 2, section 10

05-Jan-2006

F-Secure Corporation has been informed today by Ismo Bergroth that his holding and voting rights will fall below one-twentieth (1/20) due to trading that took place on January 4, 2006.

1. The company: F-Secure Corporation

2. The date of change in holding: January 4, 2006

3. Exact proportion of voting rights and share capital in F-Secure Corporation:

Totally 7 584 565 Shares; 4,9% of voting rights and share capital

4. Informer: Ismo Bergroth

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