F-Secure Oyj - Changes in company's own shares

SHARE REPURCHASE 20.12.2010

F-Secure Corporation       ANNOUNCEMENT         20.12.2010
SHARE REPURCHASE 20.12.2010                               
In the Helsinki Stock Exchange                            
Trade date                        20.12.2010              
Bourse trade               BUY                            
Share                      FSC1V                          
Amount                                10.400  shares      
Total cost                         21.162,00  EUR         
Average price/ share                  2,0348  EUR         
Highest price/ share                    2,04  EUR         
Lowest price/ share                     2,03  EUR         
F-Secure Corporation now holds a total of 3.267.313 shares
including the shares repurchased on 20.12.2010.           
On behalf of F-Secure Corporation                         
Nordea Bank Finland Plc                                   
Petri Simberg              Julius Summanen