F-Secure Oyj

Transaction in Own Shares • Dec 18, 2008

Disclosure 265486

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

SHARE REPURCHASE 18.12.2008

SHARE REPURCHASE 18.12.2008 Helsinki Stock Exchange Trade date 18.12.2008 Bourse trade PURCHASE Share FSC1V Amount 17 500 shares Total cost 31 335,50 EUR Average price / share 1.7906 EUR Highest price / share 1,81 EUR Lowest price / share 1.77 EUR F-Secure Corporation now holds 685 250 shares including the shares repurchased on 18.12.2008. On behalf of F-Secure Corporation FIM Bank Ltd Antti Pajukka