Announcement pursuant to Securities Act Chapter 2, Section 10

Oct 27, 2006

F-Secure Corporation has been informed today by Ari Hyppönen that
his holding and voting rights will fall below one-twentieth (1/20) due to trading that took place on October 27, 2006.


1. The company: F-Secure Corporation

2. The date of change in holding: October 27, 2006

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

Totally 7 279 460 Shares; 4.70% of voting rights and share capital

4. Informer:
Ari Hyppönen


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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